Crest CA4 Power Amp (going into channel protect when turning up volumes separately)

Hi There
I just did a recap job on the Amp a couple of days back. I put it back together last night.
The Amp is going into protect when I turn up either of the volumes. Seperately. The fans speed up aswell.
I'm only turning them up one or two notches.
They come out of protect when I turn them back down. The fans slow down too.
I'll try again tonight and see exactly what its doing. Lights etc.

I'm waiting on some BNC male plug to Banana plugs so I can use my scope leads with my multimeter.
A lot safer for testing. I can use the 10x aswell.

If anyone has the proper CA4 Schematic it might be of help. Ive got most of the other ones.
Cheers

BTW. The Amp was known to be going into protect before the recap. I just didn't test it beforehand.
I was under the impression it was in Protect full stop.
 
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I thought there might be one for the CA4 by itself. I think the CA2 might be closer. The PS and preamp are on the same board.
I've got the same as that but they don't seem to show the CA4 unless I'm missing it.
I'm going to try to do a video the Amp playing up.

I tried the Amp again earlier and it's popping through the speaker , it's looping ,the popping and going into protect over and over.
Let me go film it....

Cheers