Almost/OMG cut video problem

[Mahjarratian]

Hello there, long-time lurker here, (6 months roughly.) After trimming this motherboard (slightly bigger than OMG, but Smaller than Almost http://i.imgur.com/IRJ9kur.jpg) I get odd video issues, it seems to cut in and out very rapidly, quick enough for my tv, but not long enough for a
car reverse screen to detect. (Screen issue http://i.imgur.com/bpC9F95.jpg)
Couple of pictures, didn't realize I missed a lot of area on it, if needed ask for pic's of the parts I missed. http://imgur.com/a/sZPbx

Notes: the cap is wired inline to video, but I grabbed it off a dead board
Video did work before the cut, so I'm assuming I cut something I shouldn't have
The tubular oscillator was also taken from another board, (both are cpu-30 same with the video cap)
I didn't bridge the aram chip pins, since I didn't cut next/into them

That's about everything, any help would be appreciated.

 

[Blargaman91]

I haven't seen that problem before but I would suggest, first, that you check your power supply. Make sure your regulator is outputting the right voltages, and try using a different regulator even if it is.

Also be sure to sand the edges of the board very smooth with fine sandpaper - smooth enough that you can see each layer of the board clearly separated from the side.

 

[Mahjarratian]

Thanks for the suggestions, multimeter for the regulator I was using (all are official GC regulators) shows 3.44 and 1.91, whereas the second and third ones I checked came out to 3.43 and 1.91. Wired one up, with the same issue.

As it turns out, the finest grit paper I have, is as course as the dremel sanding drum I used initially, so I'll be headed to the store some time later for finer grits.

I'm currently wiring up audio, to see if that works.

 

[Blargaman91]

It does sound like some component was chopped off. I think you may want to check that this resistor is still intact:

The AV chip fails to function properly without it and I think it can produce video looking like that.

 

[DuHasst0]

That resistor is still attached, could try and clean up around those chips. Looks like Alot of dust from trimming jammed in there. Some rubbing alcohol and a qtip should help, move from the chip to the board kinda combing the legs.

I would sand a bit more with some finer paper, making sure to get in those round parts.

 

[Mahjarratian]

Yeah, couldn't see a lot of that dust by eye, so I'll make sure to clean it extra careful this time.
My step-father said he'd pick up some sandpaper next time he's out at the shop, so a few days until I can do that. Thanks again for the suggestions, for now I'm out for bed.

 

[Mahjarratian]

Cleaned up the board some, and I found that c124 got removed, pic. http://i.imgur.com/Kecacbd.jpg

Also, the camera picks up so much dust, gonna give it another go at cleaning tomorrow.

 

[Mahjarratian]

Fixed, thanks everyone for the suggestions, I found some 220 grit (I believe) sandpaper, did all around the board, and cleaned it again for good measure, which resulted in this beauty.
http://i.imgur.com/kgG0XGE.jpg

Gah! This camera makes everything look filthy, I can't see any of those prints on the screen otherwise. I'll make sure and keep everyone posted when parts arrive, ETA Jan 3rd.

Thanks again for all the help!