I found an ad for an used Nexus 7 (32Gb) for just 180€ (around $230), and since I wanted one... I'm thinking of buying it.
I'll pick it up in hand, so I'll have some time to look at it and check for defects. My question is what to look for and what apps to use for testing (probably using an OTG cable and thumb drive)
So far I can think of
- Check for scratches
- See if it boots
- Check available space (to confirm 32Gb version)
- Check if OTG works
- Check for dead pixels (use app Dead Pixel Detect and Fix from Chaming Studio)
- Check audio if plays from both speakers (should be enough to go to settings and move the volume sliders)
- Check sensors (use app AndroSensor from Fiv Asim)
- Check Wifi (with hotspot provided by my phone)
Is there anything else anyone can think of?
Check for:
- Screen Lift - with the camera at the top, check the left hand side of the device and make sure the rubber back plate hasn't come away or creaking from the bezel
- 2nd screen lift - very early Nexus 7, the glue of the screen itself came away from the body
- White spot - where the screen was lifting.. some devices would show a faint white glow on the left side (Newtons Rings effect).
- Colour bleed - apart from the Settings Menu > about half way down the full screen, it would show white and colour banding. (Tegra Fault).
In the Settings Menu of every single Nexus 7 ive seen, there is grey banding about half way down.. but not in any other menu or screen. I think this is normal due to the low res text in an other wise high res ppi device, but please correct me if im wrong.
Serial number. It should either start with a C or a D. C indicates 2012, D indicates 2013. digit after letter is the month it was manufactured. This is important because you have a one year warranty on the device, and it is transferable if you buy it used. The warranty will go off this serial number. The serial number will also indicate if it is refurbished or not.
Related
Hello,
for first I've already read some topic covering the white screen problem. I have the white screen every time on my Hermes since booted. Going into bootloader also shows white screen. I don't see any signs of misalignment.
I've already taken apart my Hermes and reconnected all connectors I've seen, including D-Pad connector, tightening and loosening the screws by it. I see there's nothing else I can fix without replacing any parts (or am I wrong?) What should I buy? Do you think that the actual screen may be faulty? Or maybe the flex is damaged and I should buy it? (well I think that some chip is connected to flex so I don't know if it can be replaced anyway). My main question is: if the screen is all white, is it possible that the actual screen be faulty?
It could be a number of things which could amount to $$$$ by throwing parts at the phone - may be cheaper to just buy another. Before the completely all white screen did you have occasional white screens with increasing frequency? First try some of the fixes for correcting whitescreens - pressure on the dpad - etc. If you still get nothing the chip could have come loose - but who knows?!!!! Need some more information - history etc.
Unfortunately don't know the history... bought cheap off ebay hoping it can be easily fixed already ordered the screen, if no luck, will send as spares/repair in my country - should earn something anyway.
i have a fault with mine some times (well a lot now) when i open it or close it all the way i get a funny fuzzing on the screen and some times it just ends up going black, move it back and forth a bit and the screen collour is inverted. i have to press the power button twice once for off then back on and it stays normal collours till u move the screen again. is this called white screen?
Not really - yours should be an easy fix. Seems like the flex cable is either loose or cracked slightly. It only occurs when you slide the keyboard out right? Any problems with the front keypad - with the unit closed?
As a fresh owner I have a few questions:
1 - The lower right corner of the front panel wobbles (?), moves slightly on touch, I can press it for about 1mm (see the attached screen). It is especially annoying when pressing OK or dial off (or whatever the button is called). Is it normal?
2 - The screen has a slight green tone (hue), can anything be done with it?
3 - LCD has noticeable light leaking near the bottom side, again, is it normal? (Well, the screen does not work now anyway, gotta flash the phone.)
Thanks
Biges said:
As a fresh owner I have a few questions (too lazy to search):
1 - The upper right corner of the front panel is flimsy (?), moves slightly on touch. It is normal?
2 - The screen has a slight green tone (hue), can anything be done with it?
3 - LCD has noticable ligh leaking near the bottom side, again, is it normal? (Well, the screen does not work now anyway, gotta flash the phone.)
Thanks
Click to expand...
Click to collapse
(1) I have no issues with this, seams fine on mine
(2) I cannot notice any hue, maybe you have a faulty unit given the blue colour and the movement of the panel.
(3) Yes LCD light is noticible, I also get leaks through the optical pad when I have the notification LED's on
1. I got some small loose on the front pannel upper area, it's especially felt when You hold the phone in one hand and work with Your thumb pressing the screen or just put the phone to You ear. You feel then the pannel moves a bit down. Maybe thats normal or just the build quality is not so good at all.
sounds like you have a faulty one. mine is solid as a rock. the loose screen and the green hue could be related. there shouldnt be any discolouration at all and i can only see it getting worse to be honest. where did you get it? if its somewhere reputable then id take it back and ask for a decent one while its still in warranty.
i do have tiny bit of light leakage near the buttons, that does seem common.
Mine is well made too, no hardware problems.
I have a silver one, solid as a rock, light leaks are present though...
Hi
yesterday I saw a light spot (that it's visible only with white screen) in the top-right side of the screen, under the power bottom.
it's visible only at high ° of inclination, if I look my tablet directly (90°) it isn't visible
I don't know how it's possible that, has someone info about it?
|DM| said:
Hi
yesterday I saw a light spot (that it's visible only with white screen) in the top-right side of the screen, under the power bottom.
it's visible only at high ° of inclination, if I look my tablet directly (90°) it isn't visible
I don't know how it's possible that, has someone info about it?
Click to expand...
Click to collapse
It's possible that the Digitizer might not be fully contacted at that particular point in the tab. I have seen a couple of posts about this. This is a hardware/manufacture defect more than likely, or something that happened over time and usage. Considering the location near an often used spot, this is probably true.
I would suggest if you can live with it, then just ignore it.
If it really bothers you, then you can remove the back cover of the tablet, and check for loose connection fasteners around the display/digitizer areas. But really, if you have to look really hard at certain angles, in the right light and color, then I would ignore it. Not worth the trouble.
Had to buy a screen replacement for my Nexus 4.
After the replacement i can see one distinct vertical line to the left. It's purple on white background.
I can also see it in recovery mode, but when i take a screenshot it doesn't show on the picture.
Is this a malfunction of the new screen, or did i mess anything up?
The screen i ordered missed the frame so i had to buy a front frame seperately and glue the screen to this.
I used this guide:
http://www.youtube.com/watch?v=YSe1I0MlpLI
everything went well, except one thing; when i connected the flex cable to the frame (check @ 23:19) i removed the little blue transparent plastic sticker, i thought it was a protective sticker cause my screen was new.. (the guide also said i had to remove a sticker if it was new)
but i found out right after it was actually supposed to be there.. i sticked it back on, though i didnt take care to align it 100%,.
This was the only thing i did sloppy..
could this cause the vertical line? think i'm going to open it up again and try set it straight if the line annoys me too much, but does anyone know what the purpose of this little blue sticker is? it looks like plastic so i thought it weird that this should lie between a cable and the frame?
anyone know?
Not sure about the blue sticker but it's either a defective screen, or more likely a badly seated flex cable.
I haven't had to change a screen since my old Nokia n95. That had something similar. Though mine was a line of purple and the backlight would only come on if I squeezed the phone.
Taking the screen back off, removing and reseating the ribbon cable fixed this issue.
I'd say it's likely to be the cable because the colours are sent as rgb values.
In your case if your only getting red and blue to x row on the screen then that will appear as purple.
I'd be less likely to think that it's a screen problem because either the whole row would be black, or there would be specific pixels that would be missing an rgb and not the entire row
Sent from my Nexus 4 using xda app-developers app
Hi guys,
My s5's screen has broken and i need a new one. Also i want to buy that on the aliexpress but some lcd screens in the aliexpress are dont have brightness setting or dont have Samsung logo on the over. In fact, if you buy a orijinal lcd or a+ quality screen on the aliexpress, will you give link me? Thx.
I've installed a few of these 'Chinese Copy' screens and they are only worth doing if you are seriously short of money. Taking your points in no specific order:
The Samsung logo is always present on every one I've had. You never see it in the pictures because of some licensing condtion that says that you can only put the name on a completed product (or so I'm told). The screens will have a scratch-and-sniff patch covering the logo, which you have to remove (carefully) with the edge of a coin or something similar.
They have all had just two (or three) brightness settings ('dimming' in the test menu will show this) rather than being continuously variable
The colour rendition is crap
The color schemes thing where you select 'cimena', 'photographic' or whatever don't work. Can't remember official name for this
Doesn't support touch hovering
Some don't support multi-finger touch (some do)
The glass is little more than thin plastic and bends/breaks easily
They are significantly thicker than normal, so they won't sit in the housing properly. No amount of glue will make them sit properly (and they will bend anyway)
The screen area is several mm smaller in both dimensions. The space between the Samsung logo and the screen boundary is v noticeable unless it's a black screen
The TSP and glass can not be separated, even with specialist hardware
TL;DnR Don't bother.