Composite LCD Controller Board Support

I soldered the VIN pad to the OUTPUT pad and it works !

Thank you so much for helping me, for answering so fast, and for your videos. Keep doing what you do and thanks again.

Dear sir,

I bought this driver and i tried to remove the diode SS14 up to the red wire, but it's not work.

Please, can you help me?

with best regards.

That's a new one. The IC (looks like it says G8BAB) appears to be doing the DC-DC work. Do you have a 12v power source and a voltmeter? A couple areas need to be probed so I can figure out what's happening.

Also, can I get a pic straight down showing the IC and traces, and a pic of the bottom of the board?

Posted by: othermod

That's a new one. The IC (looks like it says G8BAB) appears to be doing the DC-DC work. Do you have a 12v power source and a voltmeter? A couple areas need to be probed so I can figure out what's happening.

Also, can I get a pic straight down showing the IC and traces, and a pic of the bottom of the board?

Thanks for your support.

The IC is GBBAB, I have a voltmeter and a 12v power source.

In attach other photos (one is without the diode!! 😀 ).

Thanks and regards

Ps. 

If you need other detailed photos, don't hesitate to contact me. 

Dear admin, 

There are problems with my photos? 

Please, can you help me? 

Thanks and regards. 

I saw the response, but my shop orders get priority over free support. I've got some time now.

You say you remove the SS14 diode, and from the picture you took it appears that you didn't install a jumper in place of it. Is that correct? If so, installing a wire between the pads should get you up and running.

Posted by: othermod

I saw the response, but my shop orders get priority over free support. I've got some time now.

You say you remove the SS14 diode, and from the picture you took it appears that you didn't install a jumper in place of it. Is that correct? If so, installing a wire between the pads should get you up and running.

Sorry for the second post and sorry for the delay, but I got problem with my phone and internet.

I tried to install jumper in place of diode and that is the result.

Please, can you help me?

Thanks and regards.

I tried with 5V and 3.0 A

It's possible that the voltage is still lower than what's needed. The input inductor may be the issue. Can you take a voltage measurement on both sides of the inductor labeled 331?

Both sides the inductor is 5v (it's possible?!?)

Another different PCB for the same screen. Just got it off eBay. Tried 5v but just flashes on for a second. Really need it on 5v any ideas everyone? Thanks!

Hello!

I was wondering if you could help me convert my board to 5v. It is currently a 12v board.

Thank you so much in advance for your help!

@nexilla Do you have a 12v power supply to use for testing, and do you have a voltmeter?

@chronic8000 it looks like IC7 needs to be bypassed