520ST stuck in MONO mode

[PhilC]

@rubber_jonnie yes, absolutely fine on other STs.

[exxos]

Do you have 12v on the RGB port ?

[PhilC]

Do you have 12v on the RGB port ?

SO I had a few mins to look into this. This ST doesn't have 12v going to the monitor port by design and instead uses a 5v pullup arrangement for the mono mode selection.

[exxos]

SO I had a few mins to look into this. This ST doesn't have 12v going to the monitor port by design and instead uses a 5v pullup arrangement for the mono mode selection.

Yeah normally like 10K to 12V pullup on the MONO pin.

[PhilC]

@exxos I'm actually wondering if its the VGA adaptor that doesn't work, so will make up a start cable to try it at some point.

[exxos]

@exxos I'm actually wondering if its the VGA adaptor that doesn't work, so will make up a start cable to try it at some point.

I do test mono / RGB switches.

[PhilC]

@exxos I'm actually wondering if its the VGA adaptor that doesn't work, so will make up a start cable to try it at some point.

I do test mono / RGB switches.

Of that I have no doubt. I've got lots more in the queue in front of this right now, re a V5 as you know