Hello,
I got a very annoying problem with my pumpkin head unit. Theres a noise, like when you place a smartphone close to speaker, which I hear all the time coming out of my car speakers.
Sometimes it's quiet and sometimes I hear that noise.
Is there any way to fix that?
My HeadUnit is (Description from Pumpkin Website):
Pumpkin 7 Inch Quad Core Android 4.4 Car Stereo DVD Player for Opel Vauxhall 2 Din support DAB+ AV Output MirrorLink 3G WiFi OBD2 DVR Steering Wheel Control
I run Malaysk Rom, but had this issues even with the standard ROM.
Would be happy if anybody could help me.
Regards
Ben
bump
No ideas?
Any ideas
I would be happy if someone could help me with my Problem
It's likely noise from the screen. Try turning the screen off and see if it goes away. It won't be easy to fix. Make sure all your grounds are as good as possible and make sure they are as direct to the battery as you can get. Noise like this is from a bad circuit design. It's the difference between an expensive well-engineered board and some POS from China. Yeah, I got one too, the Lollipop unit (self-rooted w/Viper).
If you only get the noise when the car is running it could be noise from your alternator or plug wires. That's harder to fix. You could use one of the crazy capacitors they make for car audio, but if you aren't running a 1000W, they can be overkill. I would try 1000uF cap across the 12V battery supply to ground, as close to the head unit as you can get it. Make sure the cap is rated at least 15V or so (it will see more than 12 from a car!). It will be electrolytic, so make sure you obey polarity. I'll be doing this myself later today.
May be worth a try running a wire from the negative of the battery post to the radio ground...I would just do it quick and easy in the driveway before trying to route it through the car.
Thank you for your support on that...
Unfortunately that sounds not that easy. I thought this might be a common problem with those head units :-/
I have a sound coming thru the speakers as well kinda sounds like a hard drive reading data when its booting up but goes away once its booted & running.
Might try running a better ground see if that helps.
I’m new to this and really appreciate any help.
Just recently installed the Xtrons D719AS single din head unit with android 7.1.1 in a new project jeep CJ7 I’m working on with my dad.
We installed it without using an external amp. Wired the speakers directly to the ISO. (Probably both a bad idea)
We tested using the 2 front speakers at first, everything worked and sounded great.
Then we hooked up the rear 2 speakers and tested with all 4 speakers.
It was all working and sounded great for about 10 minutes, then after raising the volume up about half way or so the sound shut off. The radio kept working with no sound. All functions on the radio work fine but not a peep of sound from any source.
We removed all power from the head unit (unplugged ISO) for about 30 minutes, removed rear speakers (tested with only 2 front), did a factory reset on the head unit with no change. Still no sound.
Did we blow something in the radio? Maybe an internal amp fuse?
If we hookup an external amp and use the RCA connections would the sound possibly work? (Bypassing the internal amp I guess).
Also this head unit does not have a blue/white wire for amp. Only a blue wire for ANT. Should the external amp go on the ANT wire or just hook it up to a Accessory/ignition line?
Also can anyone tell me what the pink wire (reverse) is for on the ISO?
Is that for the radio to know when reverse is on for the reverse camera?
I can return (to China) for repair, but would rather try and fix myself if possible.
Hey guys,
I bought this: https://www.aliexpress.com/item/33028336644.html?spm=a2g0s.imconversation.0.0.1f993e5f5E88oc
And I finally got everything to work smoothly but the SWC is not working at all. I had a 2011 subaru nav without the harmon kardon audio and I searched for like 2 days now and can't find anything that helps.
I went into factory settings and tried to reset everything I wound up messing up all my buttons on the HU and flipping the screen etc.. I fixed it but it was annoying at 10pm lol.
Any tips to fix this? One of the main reasons I got this was for SWC plug and play.
Pics:
https://ibb.co/YtCwPG9
https://ibb.co/bdhm6Q3
Video:
https://imgur.com/a/KTSR7gB
Thanks!
I dont have any experience with Dasaita Head units; I only have experience with ATOTO. That said, I did install an ATOTO Head Unit into 2011 WRX with factory-installed Nav similar to yours. I have the same buttons on my steering wheel as you do. I was able to get the SWC working with ATOTO.
I looked at your video and it seems the Dasaita Head unit is not sensing when you press the SWC buttons on your steering wheel. So this might be a SW issue in the Dasaita, a HW problem with Dasaita, or a wiring problem in the Dasaita harness.
From the link you had posted, there are two harnesses available (DXY022 and DXY029). I assume you have DXY029? It looks like this harness should be totally plug-n-play compatible since it has both the 20-pin and 24-pin connectors for Subaru. Since it's not working, it is possible the harness is not actually compatible with 2011 Subaru, and you may need modify the harness. Out of curiosity, is all the other functionality of the 24-pin connector working (like reverse camera, Bluetooth microphone, AUX audio and video input from the console box) ?
A few ideas to start:
Does Dasaita have any tech support and have you reached out to them? This is a long shot but worth a try to see if they have any suggestions.
Are the wires on your DXY029 harness individually labeled? If so, are the wires labeled with SWC attached to the correct pins on the 24-pin connector?
The pin outs on the Subaru 24-pin harness are documented in this thread.
jackohound said:
I dont have any experience with Dasaita Head units; I only have experience with ATOTO. That said, I did install an ATOTO Head Unit into 2011 WRX with factory-installed Nav similar to yours. I have the same buttons on my steering wheel as you do. I was able to get the SWC working with ATOTO.
I looked at your video and it seems the Dasaita Head unit is not sensing when you press the SWC buttons on your steering wheel. So this might be a SW issue in the Dasaita, a HW problem with Dasaita, or a wiring problem in the Dasaita harness.
From the link you had posted, there are two harnesses available (DXY022 and DXY029). I assume you have DXY029? It looks like this harness should be totally plug-n-play compatible since it has both the 20-pin and 24-pin connectors for Subaru. Since it's not working, it is possible the harness is not actually compatible with 2011 Subaru, and you may need modify the harness. Out of curiosity, is all the other functionality of the 24-pin connector working (like reverse camera, Bluetooth microphone, AUX audio and video input from the console box) ?
A few ideas to start:
Does Dasaita have any tech support and have you reached out to them? This is a long shot but worth a try to see if they have any suggestions.
Are the wires on your DXY029 harness individually labeled? If so, are the wires labeled with SWC attached to the correct pins on the 24-pin connector?
The pin outs on the Subaru 24-pin harness are documented in this thread.
Click to expand...
Click to collapse
Hey thanks for the response, this is coming straight from an unmodified headunit. Had the same one since I bought the car and i'm the only owner.
Yes, I got DXY029.
My car does not have AUX but it had video in and out that i made work as AUX. It also had a cigarette lighter in there that works.
All bluetooth works, apple carplay works, audio works, radio now works after I bought an adapter (although the reception is horrible). SWC is the only thing not working and yeah it looks like there is no connection at all. I unplugged and plugged in the harness a few times to make sure I was making connection, still nothing.
I can try and open it again and look at it but the way it was plug and play wouldn't let me plug it in upside down or any other way, so idk why the swc wouldn't connect if everything is lined up.
I've been on tech support with them for like 4 days now and they keep saying they'll have an engineer look at it but are taking a while. That nasioc url says 404 for me.
Thanks for your help so far!
Yes, I agree since the Dasaita was plug-n-play, there's really no way you could have messed up the connections. Since it's not working, i'd say it's definitely a Dasaita problem -- either their SW or their HW or their harness isn't really plug-n-play for Subaru with Nav. I'd push on Dasaita to either fix the problem or provide you the needed technical support. You'll need a description of the Dasaita SWC circuit and especially a wiring diagram of their DXY029 harness. Lacking this information, you'll be stuck reverse-engineering their harness or living with a broken SWC.
The good news is that the Subaru SWC for your STI is quite simple -- there are only 2 wires involved which are found on pins 3 and 15 of the 24-pin connector. There is no reason why we cant get this working if Dasaita helps. The amount of resistance between those wires will vary between 4.7K ohms (no key pressed) to 22 ohms (mute button pressed). Note again that Subaru SWC does not have resistive path to ground.
BTW, this is the NASIOC url i meant to post, which has the pinout for the 24-pin nav connector for Subaru 2008-2011:
https://forums.nasioc.com/forums/showpost.php?p=10308972&postcount=11
jackohound said:
Yes, I agree since the Dasaita was plug-n-play, there's really no way you could have messed up the connections. Since it's not working, i'd say it's definitely a Dasaita problem -- either their SW or their HW or their harness isn't really plug-n-play for Subaru with Nav. I'd push on Dasaita to either fix the problem or provide you the needed technical support. You'll need a description of the Dasaita SWC circuit and especially a wiring diagram of their DXY029 harness. Lacking this information, you'll be stuck reverse-engineering their harness or living with a broken SWC.
The good news is that the Subaru SWC for your STI is quite simple -- there are only 2 wires involved which are found on pins 3 and 15 of the 24-pin connector. There is no reason why we cant get this working if Dasaita helps. The amount of resistance between those wires will vary between 4.7K ohms (no key pressed) to 22 ohms (mute button pressed). Note again that Subaru SWC does not have resistive path to ground.
BTW, this is the NASIOC url i meant to post, which has the pinout for the 24-pin nav connector for Subaru 2008-2011:
https://forums.nasioc.com/forums/showpost.php?p=10308972&postcount=11
Click to expand...
Click to collapse
Got it! Gonna keep pushing on them to see if they can provide any of the details. Or maybe send me a new harness.
EDIT: they don't seem to be very helpful...
This is what they're sending back to me:
"hi
they said have installed some of the same model , and it works after set the steering wheel key functions on the head-unit , it should fit"
I took out the radio again and tried to replug everything back still no good.
https://imgur.com/a/Tz3dP8t
That's disappointing that they are not providing good customer support, other than telling you that it should just work. I would definitely continue to push them to make things right with whatever leverage you have. I see the DYX029 harness is only like $9, so you would think they could at least send you a second harness to see if it helps.
When attempting to program the buttons on your steering wheel, have you tried pressing the button for a few seconds? Just a random idea. I assume the user manual has no secret instructions or useful info? I know most Chinese head units have terrible user manuals. I couldn't not find any public user-manual for that head unit.
I looked at the video and pics you sent as well as online pictures of the DYX029 harness. The wires that carry the Subaru SWC signals are the black and green-white wires which i noted with red arrow on the first attached pic. Sorry for my terrible drawing, but those are the wires you care about. From the DXYX029 Harness picture, I think those wires are in fact connected to the Head unit. So as best as i can guess, the harness looks like it might work, assuming you dont just have a faulty harness.
Assuming you dont get any useful help from Dasaita, and you want to get this working, my suggestion would be that you try tapping into one of those wires. You can use T-Tap to easily tap into the wire), then connect the tapped terminal to chassis ground. It doesn't matter which of the two wires you tap. This is exactly what I had to do get ATOTO working, and the reason is because ATOTO engineers misunderstood how the Subaru SWC circuit works. I'm just guessing that Dasaita made the same mistake as ATOTO, so it's posssible this wont fix your problem, but I can assure you this experiment wont cause any damage to the Dasaita.
jackohound said:
That's disappointing that they are not providing good customer support, other than telling you that it should just work. I would definitely continue to push them to make things right with whatever leverage you have. I see the DYX029 harness is only like $9, so you would think they could at least send you a second harness to see if it helps.
When attempting to program the buttons on your steering wheel, have you tried pressing the button for a few seconds? Just a random idea. I assume the user manual has no secret instructions or useful info? I know most Chinese head units have terrible user manuals. I couldn't not find any public user-manual for that head unit.
I looked at the video and pics you sent as well as online pictures of the DYX029 harness. The wires that carry the Subaru SWC signals are the black and green-white wires which i noted with red arrow on the first attached pic. Sorry for my terrible drawing, but those are the wires you care about. From the DXYX029 Harness picture, I think those wires are in fact connected to the Head unit. So as best as i can guess, the harness looks like it might work, assuming you dont just have a faulty harness.
Assuming you dont get any useful help from Dasaita, and you want to get this working, my suggestion would be that you try tapping into one of those wires. You can use T-Tap to easily tap into the wire), then connect the tapped terminal to chassis ground. It doesn't matter which of the two wires you tap. This is exactly what I had to do get ATOTO working, and the reason is because ATOTO engineers misunderstood how the Subaru SWC circuit works. I'm just guessing that Dasaita made the same mistake as ATOTO, so it's posssible this wont fix your problem, but I can assure you this experiment wont cause any damage to the Dasaita.
Click to expand...
Click to collapse
Yeah I tried to hold press for a few mins and even factory reset after pluggin back in securely. I'm gonna see if they can send me another harness, might take months tho, maybe I should just try to tap it, worst comes to worse I buy another harness.
I'm just annoyed because others have this working as plug and play with the same car, which kinda leads me to believe I have a faulty harness. :/
Again, thanks so much for all your help. I'll update you with any info I get from them.
Did you ever figure this out?
Bumping this post if any solution was found. I have a Dasaita unit on an 08 STI, and have the exact same issue. Everything works fine on the head unit except the steering wheel controls.
Check and see if your speakers are wired correctly, if you move the balance and fade you will find out. My whole wiring harness was wired wrong and I had to repin Dasaita's harness. Once you figure that out and have the swc wires right you will have to tap and ground swc2 to the chassis. This is the schematic I used for my 2010 STI.
Thanks!
So I took out my harness, and yes, they did in fact mix up the speakers on the harness. The dasaita Rear Left- goes to the Subaru Front Right -, and it goes on from there, so the speakers are all mixed up. How did you happen to repin it? Is there a way to pull out the wires off of the harness easily, or do I need to tap and re-solder them? Edit: Found it, from within the WRX-pinout link below, there is a plastic clip right by the pin in the harness, just take something thin, lift up the plastic clip, then the wire pulls out. This is on the Dasaita harness side of it that hooks into the car connector.
The Dasaita Key 1 does go to Subaru SWC+, and the Subaru SWC- goes to a bundle of grounds on the harness. So it isn't a complete mess like the speakers at least.
So just tap SWC- that goes to the bundle of ground wires and have it go to chassis ground, or do I need to do something with Key 2 coming off the Dasaita harness?
Thanks. Here are all the resources I referenced to help:
http://ae64.com/WRX-pinout.htm
http://ae64.com/Navi-transplant-install.htm
https://forums.nasioc.com/forums/showpost.php?p=10308972&postcount=11
And finally the Dasaita manual which has their harness pinout.
I would repin the Dasaita side of the harness incase you want to revert to stock. I just used a screwdriver pick to depress the pins, they pop out fairly easy once you get the hang of it. I can't remember 100% what I had to do with the second swc wire, I will pull my stereo tomorrow if i have time.
Finally figured it out and got it working.
It looks like they also butchered the nav harness pinouts there. It's as if they pinned it looking in a mirror, all the pins were in the wrong place.
I had to re-pin their harness that goes to the nav connector on the subaru, and finally got the damn thing working. I only left the SWC + and -, brake and reverse pins and left out the rest (don't need them). Maybe I will hook up the audio ones later on but I don't need them. Here is the picture of it repinned.
To re-pin it, in the harness on the dasaita harness end that adapts to the subaru nav harness, there is a little rectangle above each pin. Had to stick a small precision flat head in there, wiggle it around, then try to pull out the wire. Also used a pair of needle nose pliers to grab the pin itself and push it through for the ones that gave more trouble.
Thanks for all your help. Really got me to sit down and go through it all wire by wire to realize their mistake with the harness.
Glad you got it figured out. The good news is that once it's wired correctly the head unit is quite good.
Hey glad you guys figured it out. I'm sorry I've been inactive. I kept trying to reach out to them and they kept giving me the run-around.
I have a new Android head unit but once I installed it I am getting no sound. Investigating the problem I found that the Amp control wire was not going high (12v) and therefore there is no sound as the amps aren't activated.
I believe this is a software problem since the Amp control pin is not completely open. Also I noticed that the sound control page is not complete as there is not any controls for balance or fade.
I do not have any tech support for this item but need to find a way to fix the software load.
The unit is a 7089C unit running Android 8.1, installed in a C6 Corvette.
Software load:
Android: YT9213A_00009_V001_20191126
XY Auto: 3.1
Gerbil
Would installing a different launcher possible solve this problem?
No, the MCU is what controls that function. An MCU update could fix the problem if it is a software issue. I don't know how you tested the control pin but short of hooking up an oscilloscope to it you can't really tell what is on it. It could be a resistive or broken solder joint that kills the output. MTC units have a setting to use factory amp maybe yours has something like that.
nic2k said:
No, the MCU is what controls that function. An MCU update could fix the problem if it is a software issue. I don't know how you tested the control pin but short of hooking up an oscilloscope to it you can't really tell what is on it. It could be a resistive or broken solder joint that kills the output. MTC units have a setting to use factory amp maybe yours has something like that.
Click to expand...
Click to collapse
Thank you for the response.
I just read the output of the pin with a meter. It did not read zero but did not register over 1vdc though. Because there was a little something there I assume the connections are complete in the head unit but I suppose I could be reading into the radio harness adapter unit. I have not thought of trying to see what I would see with the scope.
My next step to try is to put a 12vdc on the amp control line to see if the head unit is actually putting out sound. I am also going to see if the unit can be returned for replacement.
I've never had this happen like this before.
Hi Guys,
A while back, I purchased the T10 unit from Srnubi. It worked perfectly for day 1. All speakers working, subwoofer was loud, everything was great. I came back to the car the next day and there was 0 subwoofer! Nothing was changed, everything normal so I started trouble shooting and I testing turning the bass up on the DSP to max, only then I could very faintly hear the Sub working. I figured I would try to reset the unit in hopes that it would work but now I have a factory android head unit with no running software (except the android auto and carplay software) and still next to no subwoofer output. This lead me to believe that the subwoofer out RCA is not working. I tested all RCA's and they're all very faint (I'm running the speakers from an amp which is connected to the head units speaker wire as the chanels). Has anyone had this issue before and is there a way I can fix the RCA Output without opening up the headunit and looking for faults on the board? And how do I install the firmware that Srnubi has sent through? They've completely stopped replying to me and didn't provide any instruction, worst part is they waited until my 15 days was over to stop replying and now I can't raise a dispute on AliExpress.
Any help would be much appreciated!
Cheers!
rorschach_96 said:
Hi Guys,
A while back, I purchased the T10 unit from Srnubi. It worked perfectly for day 1. All speakers working, subwoofer was loud, everything was great. I came back to the car the next day and there was 0 subwoofer! Nothing was changed, everything normal so I started trouble shooting and I testing turning the bass up on the DSP to max, only then I could very faintly hear the Sub working. I figured I would try to reset the unit in hopes that it would work but now I have a factory android head unit with no running software (except the android auto and carplay software) and still next to no subwoofer output. This lead me to believe that the subwoofer out RCA is not working. I tested all RCA's and they're all very faint (I'm running the speakers from an amp which is connected to the head units speaker wire as the chanels). Has anyone had this issue before and is there a way I can fix the RCA Output without opening up the headunit and looking for faults on the board? And how do I install the firmware that Srnubi has sent through? They've completely stopped replying to me and didn't provide any instruction, worst part is they waited until my 15 days was over to stop replying and now I can't raise a dispute on AliExpress.
Any help would be much appreciated!
Cheers!
Click to expand...
Click to collapse
DSP output to subwoofer has probably burned (regulator voltage chip inside on board), must be replaced.