MTC9000 Sync

[Syrup2407]

Hi Folks,

Am looking for a few pointers on an MTC9000 that is giving me a headache.

The monitor has a great picture but I am really struggling with the vertical sync, it is super touchy on the vert sync adjustment to the point breathing on it will cause it to loose sync. The chassis has recently has had a cap kit. I have been over the circuit looking for dry joints and out of spec components but everything seems to check out.

I am using a Craftymech TPG and have tried pos / neg sync and also composite but the result is always the same rolling vertical picture.

Are there any measurements I can make or specific test points to monitor that might help me to narrow down the issue.

Thanks in advance,

Gav

 

[Georgian2]

Are you sure you don't have to hH and V sync pin together?

 

[Syrup2407]

Are you sure you don't have to hH and V sync pin together?

I am supplying separate H & V Sync from the Test Pattern Generator but I guess the previous owner might have joined them on the PCB (I will have a look just in case)

 

[Georgian2]

You should only need the H sync, not familiar with that test pattern generator.

 

[big10p]

You should only need the H sync, not familiar with that test pattern generator.

This. The MTC9000 monitors I have take composite sync on the H Sync pin. Leave the V Sync pin disconnected.