MTC9110 issues

[Yakama]

Ok thanks I will order some then and just replace anyway. Will check those resistors. Thanks

 

[Yakama]

R110 reads 31.5k is that too low? Think it should be 33k?

 

[Yakama]

Other than slightly low R110 above R113,114,115,118 all test ok

 

[gunblade]

i would not be concerned by r110
check r102 680k
and you put a new cap in on c54 and c56?

are you testing these chassis from an iso transformer or using a hantarex dc supply?

 

[Yakama]

R102 tests ok i think a bit high at 710k

It’s a hantarex power supply that’s in the cabinet

This chassis that doesn’t sync that I’ve been testing just now (as I get an image) hasn’t been recapped. I did recap the other and did get it to sync but then I’ve now lost image again so not sure what’s going on with that one

Diodes look ok what what I can see too

 

[Yakama]

Some progress I put another IC2 in and replaced C56 (I don’t have another C54 cap to hand) and it looks like it’s almost synced but image is slightly doubled and flickering now

 

[Yakama]

Scratch that I cleaned a pot a bit again and it now syncs

Needs adjustment but getting there thank god, I’ve spent days on these chassis already 🙈

Thanks for everyone’s help again, I’d be lost without this place

 

[Yakama]

Just getting round to looking at this again to get the colour issues sorted and the P1 contrast pot is causing issues. Does anyone know where I can order a new one? I can’t seem to find one of these three gang pots