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[SOLVED] Broken FPC Connector in HDMI display

Posted: Fri Dec 22, 2017 1:55 pm
by salami738
Hi,

I have the HDMI 3.5 inch 480x320 display with a controller board:
Image
There is a string on the FPC cable, backside: FPC-QD350C48001V1.

Today I noticed that the lcd backlight turns on and off at random times and it flickers. I opened up the case and when I move the panel, the problems became intense. I marked the lanes that are used for the backlight.

Is there any way of fixing a broken FPC cable? Don't want to replace the whole display with controller board... :oops:

Re: Broken FPC Connector in HDMI display

Posted: Fri Dec 22, 2017 2:29 pm
by YaYa
You can try to solder a wire to replace the broken path !
Find the starting pad and follow it to the end.

Re: Broken FPC Connector in HDMI display

Posted: Sat Dec 23, 2017 4:18 am
by salami738
YaYa wrote:
Fri Dec 22, 2017 2:29 pm
You can try to solder a wire to replace the broken path !
Find the starting pad and follow it to the end.
Thanks for the tipp. I was hoping there is some magical way, in which I dont have to solder this very tiny smd leds :lol:
It was do able, here are some pictures (only had to replace the anode wire (+)).

Before
Image

After
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Re: [RESOLVED] Broken FPC Connector in HDMI display

Posted: Sat Dec 23, 2017 5:38 am
by YaYa
Great ! Please salami put a [solved] into the topic’s title

Re: [SOLVED] Broken FPC Connector in HDMI display

Posted: Sat Dec 23, 2017 11:47 am
by salami738
Changed that. Cant login on my phone, so I have to wait... Happy christmas!