Peavey Bravo 112 - reverb fail

[Peavey112Bravo]

OK Texas Instruments 4558 arrived today and installed and that's fixed it! But on the downside, it's not the best reverb, but hey it works.

For anyone else reading this in the future, I'll just add that I did have to discharge the capacitors as even after around 24 hours of being off, there were a few volts showing, not a lot (< 5 v), but still, be careful.

Thanks for everyone's help here.