Superbreakout monitor troubleshooting

[vernimark]

I need your help....
I'm very happy Superbreakout board works with the exception of sound but TDA1004 is missing on the PCB so..... I think it could be an easy fix

anyway in this cab there is the original monitor, a Tec Videoelectronics inc. TM-600 Tv Monitor

manual here: http://www.vernimark.com/arcade/archive/monitor/mon_rc_tm-600.pdf

when I switch on the game screen is dark but after more or less one minute I can see the image rather faded.

It's a good start, yes, but no h or v sync and using both pots it's impossible to have a stable image.

signal is ok because I tested the game on another monitor, and power section is ok too because I have 100V on R907, as indicated into the schematics...

I'm quite confused I can't stop neither H or V, it seems somposite sync is not splitted correctly from the signal... any idea?

[vernimark]

ah, 90% of electrolytic capacitors have been replaced, i'm waiting for the rest. nthing changed at the moment