Bad 3.5 screen

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Oxodao
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Bad 3.5 screen

Post by Oxodao » Sun Jun 19, 2016 2:46 pm

Hi,

Today I received my 3.5" screen that I bought here: http://www.ebay.com/itm/281957411642?_t ... EBIDX%3AIT

The only problem is that... The main board does not work. It would not even turn on...
I teared it apart and guess what ? The connector for the screen was totally sideway. The first pins were connected but the last were too high to do contact. In my genius day I tried to add some solder and ended by soldering everything together so I decided to take of the connector and doing so I f*c**d up few traces... ><
I made a bad feedback of course and guess what? The seller want to refund me only 7€... Out of 17... I would not even care to send it back if that's what they want but....

I asked them if it was possible to only send me back a new PCB and I'm waiting for the awnser.
Any idea on what can I do to not loose my money ?
Thanks in advance


BTW I got a really large board that do not fit in the GBZ, I will probably need to cut it off as no trace are on the edge if I'm not mistaken...
Arduino sketch for the gamepad (Teensy replacement): http://github.com/oxodao/GBZGamepad

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Re: Bad 3.5 screen

Post by Fleder » Mon Jun 20, 2016 12:57 am

Oxodao wrote:Any idea on what can I do to not loose my money ?
Don't tinker with things that are broken and you want to refund.
Why would the seller take back a product you opened up and messed around with?

But as you already did, use a fine soldering tip, use 1mm or less solder and carefully solder on every connection again.
I don't know the board, but i managed to solder on wires onto my VGA Display, so this should be doable, too.
What exactly is your problem here? That you soldered all connections together?

As for your traces, before you break it, too. Use a flashlight and shine it through the PCB to see the traces.
You can also cut off buttons, if they are on the same board as the controller, and later wire them on again.

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Re: Bad 3.5 screen

Post by Oxodao » Mon Jun 20, 2016 8:17 am

Yeah I know; Fortunately is sending a new one, I hope it will work...

I did soldered everything together, I can't use solder wick, I don't know why but mine simply does not work... And the pump is just too huge to get at the right place...

Plus I also broke some traces...

For the board, I'll get a picture, not sure if it is any kind that we've already seen here...
Arduino sketch for the gamepad (Teensy replacement): http://github.com/oxodao/GBZGamepad

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Re: Bad 3.5 screen

Post by Fleder » Mon Jun 20, 2016 8:27 am

Oxodao wrote:...I can't use solder wick, I don't know why but mine simply does not work...
It has to be the same temperature as the solder when it melts or else it will not "suck" up the solder.
Try to hold your tip onto the wick and the solder at the same time.

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Re: Bad 3.5 screen

Post by Oxodao » Mon Jun 20, 2016 8:52 am

Fleder wrote:
Oxodao wrote:...I can't use solder wick, I don't know why but mine simply does not work...
It has to be the same temperature as the solder when it melts or else it will not "suck" up the solder.
Try to hold your tip onto the wick and the solder at the same time.
People in videos hold it in hand but mine is damn hot so no clue which one is wrong.. My soldering iron is a Weller wtcp-s so it has auto temperature.. I'll try as soon as I can
Arduino sketch for the gamepad (Teensy replacement): http://github.com/oxodao/GBZGamepad

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Re: Bad 3.5 screen

Post by Fleder » Mon Jun 20, 2016 10:43 am

Oxodao wrote:People in videos hold it in hand but mine is damn hot so no clue which one is wrong.. My soldering iron is a Weller wtcp-s so it has auto temperature.. I'll try as soon as I can
You mean the wick? They hold the wick in their hands but its hot?
It usually comes in some kind of plastic spindle or something. Hold this and only unroll/unwind? a small part.
Thus you do not touch the bare soldering wick.

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Re: Bad 3.5 screen

Post by Oxodao » Mon Jun 20, 2016 2:47 pm

Here for example:
https://www.youtube.com/watch?v=Fxu1LAoqTRA

Don't he feel the burning wick or it's just that mine spread the heat anormaly ?
Arduino sketch for the gamepad (Teensy replacement): http://github.com/oxodao/GBZGamepad

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Re: Bad 3.5 screen

Post by Fleder » Tue Jun 21, 2016 12:08 am

That's strange. I would've dropped mine, too.
I am holding the wick at the coil, not at the wick itself, because it really gets hot.

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Re: Bad 3.5 screen

Post by Oxodao » Tue Jun 21, 2016 8:04 am

Yeah... Holding it through the plastic is pretty uncomfortable..;
Anyway, the seller is going to send me another one, let's hope it will work!
Arduino sketch for the gamepad (Teensy replacement): http://github.com/oxodao/GBZGamepad

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