‘69 era 50 Watt Plexi build squealing problem

[jack1999]

have had a look at your build - looks nice and tidy

There are no glaring errors that I can see.

When I asked about wire dress I talked about keeping preamp wires apart and the plate wires and grid wires apart. I see a couple of places where that is not the case.

I would also shorten the grid wires on the output valves (that twisted loop around top corner of the board)

Does your amp cab have an aluminium shield inside?https://www.zouser.com/

[Webby]

Thanks to all that have replied with helpful suggestions. I have now sold this amp head on. I did inform the new owner about the squealing problem and he is not fazed by it. Says he knows an amp guy who will be able to sort it! I wished him the best of luck!