Sega Genesis Model 1 No Video Output Despite Recapping

I have a VA6 Model 1, and after recapping my system (which had Rubycon caps maybe I didn't need to) with Nichicons, and doing a video output mod, there's no video! Sound is fine.
Did I do anything wrong or is my CXA1145P actually dead?
Nothing is bridged btw. I had tape on the points but took it off for reference.

 

Anybody? I'm about to plink $10 for the ICs if nobody has a definite answer. Is it possible for the Gen 1 Video IC to fail like the rest of the capacitors? Has anyone had one with Rubycon capacitors that had to be replaced?

 

well my va6 hdg with rubycon caps kinda failed, while the image was good the brightness of the image will change after some time running (went darker or brighter).
did you checked all the caps have a good continuity with the traces? maybe someone is failing (C32 will be a good candidate since its the 220uF cap that goes from leg20 cvout to the multiav port in the console)
also you can try soldering a cable from leg20 from the 1145 to a rca with a 75ohms resistor + a 220uF cap to check if that works

if nothing of that works, then maybe you're right and the CXA1145 just got fried

 

In an attempt to remove the CXA1145, I accidentally removed a few of the traces, though they appear not to be related to necessary output like RGB and composite. I bought and put in a new IC. However, I can still only get sound. I still don't exactly know what's going on, I will investigate more, though I might have a dead Genesis on my hands. It could be a short though I don't know why I'm still getting audio if my outputs are common ground.

 

what's the mod you're trying to add?

did it have video before you touched it?

 

No need to pull any punches, whoever wrote the diagram to even suggest this is an idiot. Genesis already sends RGB to its AV socket.
An encoder chip belongs at the same output stage a SCART cable goes. Lets the console's factory video stay untouched. (OK to slightly mod to reduce jailbars)

 

I'm modding it for S-Video. I already had success with two other Genesis. Those red wires were for ground before I disconnected it.

 

Nothing wrong with that. Doesn't mean the method is ideal.

 

In that case, you may have destroyed some traces that were necessary for the encoder to function. What pins did those traces go to?

 

Do you have a link to the mod you're trying to do?
Does the console still output composite video?
Did it output video before you started?
Where are you connecting the composite output from the chip? (the white wire I believe)

 

Seems like you were quick on the trigger to remove the encoder.
You are not very clear as to some details and as to what you tried or did not try.

I guess the console had video before you recapped it.
But did it have Video between the recap and the mod? Unless you did it all in one go without testing in between, which is not very wise.

Did you try video out from multiple source? Tested removing the mod? All things you should probably have tried before removing the encoder.

 

I don't have the Sega Genesis 1 video cable. I bought this in a lot of not working Genesis consoles, all with problems with video, and have recapped all of them. I was using console5's S-Video mod, red wires were ground before I learned from the source that grounds for these pots are not needed.

Two were model 2s, one with a Samsung, the other Sony. These were working fine, and one of them I mentioned in another thread that I shorted out the EMF part. I fixed that. The other I s-video modded and region switched modded successfully.

Both Model 1s I bought were VA6.

One model 1 I have successfully S-Video and composite modded with Region Switch.

The other I followed the same methodology, but could not get ANY video output out of the system. I removed the mods and connected only composite, nothing appears. Nothing appeared to be shorted out because I grounded all the plugs with the same wire. Audio could be heard, but not video.

I may have jumped the gun with replacing the CXA1145, considering I still had the same problem. I probably should've investigated further before plunking down the money for the new encoder chip. I suspect this might also be related to a loose trace from one of the capacitors while I was fixing this particular system. I will have pictures up by the end of the week so you guys can help me with what I did wrong.

Thanks so far. I'm a little sore, and am leaning toward giving up on this particular genesis, even if I did spend a hefty chunk of change on this particular one. But at least it was a learning experience, including that one has to use a solder sucker when dealing with these things.

 

The theory that a trace got damaged during the recaping makes sense as the traces are very easy to lift on some model 1. I myself damaged some a few times, which I had to repair with wire.
One needs to be very careful with those things. Even after carefully sucking all the solder when you think the cap will come loose and next thing you know the pad comes with it. Last time I recapped a VA3 I had a feeling the traces were holding by the varnish on them.

Anyway, You should consider getting the proper cable to test the consoles before making mods on them, Just my two cents. It is not like the cable cost a lot. You can get one for less than the encoder you changed
http://www.ebay.ca/itm/AV-RCA-Audio...ideo_Game_Cables_Adapters&hash=item1e89ca1c43

 

http://imgur.com/a/H4TSw
I'm not going to upload the pics to this site, though I think i screwed up before the posting this.
Anyway, it looks like I pulled G and B out (21, 22); XO out #5, audio in #8, C sync in #10, and 15 and 16. All this is at the bottom of the mobo.
Everything on top looks alright, I had big problems with the bottom.