Search found 3 matches

by crosstalk
Sat Dec 06, 2014 4:56 pm
Forum: [B] Support
Topic: Question about serial cable for ln40b630n1f
Replies: 2
Views: 1260

Re: Question about serial cable for ln40b630n1f

I built a new serial cable and it still doesn't work. It doesn't seem like the signal voltages are quite right anyway. I guess it's time for a new main board--any thoughts out there on this? Has anyone had a main board fail with no apparent hardware problems?
by crosstalk
Fri Dec 05, 2014 7:49 pm
Forum: [B] Support
Topic: Question about serial cable for ln40b630n1f
Replies: 2
Views: 1260

Re: Question about serial cable for ln40b630n1f

I did some additional checking on the old serial cable that I used for this. It looks like one mistake might be wiring this up with an old cellphone cable--there is probably some kind of IC inside the molded part of the cable. I will have to look again at my spare parts for something better. In the ...
by crosstalk
Fri Dec 05, 2014 6:31 pm
Forum: [B] Support
Topic: Question about serial cable for ln40b630n1f
Replies: 2
Views: 1260

Question about serial cable for ln40b630n1f

Hello. I have a dead ln40b630 that I got for almost nothing. It looks like the main board switches itself on/off--maybe due to firmware corruption. I would like to try to get access to the uboot to reflash it if possible. I removed the ps_on pin from the power connector so the main board stays power...

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