MVS boards Sync issues

Hello friends, im very confused about resistances in RGB and Sync signals of MVS boards.

I see diferents models of boards have little diferents values to work, like MV1C vs MV1FZS

In CRT TV all works fine at:
--------------------------
RGB = 200 ohm
Sync = 1k - 1,1k

The problem/strange is in a LCD TV:
--------------------------
RGB = 75 ohm
Sync = 1 ohm

In MV1C work fine on 1 ohm, but MV1FZ only adjust at 90% the sync, a little blurry/doubling on horizontal sync remaining, its because it need no resistor or 0 ohm in line? i dont know because minimal range of pot is 1 ohm.

Its very strange because always think LCD screens need values around 4,7k in Sync, but is not the case

Im totally confused.

The problem is more about LCDs and plasma

Yes the mv1fz is known to be extremely picky

The solution is to add an 1k pot on the sync line, this way you can adjust it

Been using this for years all fine now

Great tip by Xian Xi several years ago

I know use this on all my CMVS and also on my superguns

dragonpt said:

The problem is more about LCDs and plasma

Yes the mv1fz is known to be extremely picky

The solution is to add an 1k pot on the sync line, this way you can adjust it

Been using this for years all fine now

Great tip by Xian Xi several years ago

I know use this on all my CMVS and also on my superguns

Click to expand...

Thanks for reply, actually mi supergun has 5k pot on sync, but yes i think the problem in this case is that TV in concret i have problems without the PCB rgb impedance matching include on this tv.

I try the same boards, supergun and rgb pcb in other TV LCD/LED and works fine.