Its a Pignose G40V Amp that doesn't work. The shop I bought it from received it to see if they could repair it cheaply, but they determined that the PT had blown as it was drawing current without anything on the secondaries, so the customer didn't want it.
On first inspection I can see that someone has put a 4A fuse in the 1A fuse socket........There is also a fuse socket inside the amp that requires a 5A fuse which is missing. On closer inspection I can see that all of the filter caps need replacing as they are bulging. This linked with the 4A fuse is probably why the PT blew.
Plan of action:
1. Replace PT with one that has a slightly lower HT. Ampmaker has one that should be perfect, giving me a HT of 360V or 250V if I wish.
2. Rewire the fuse sockets so they are on the live wire and not the neutral!!!!
3. Replace Filter Capacitors.
If anybody looks at the schematic for this amp they will see it looks very much like an amp from the 80s made by a company called Marshall
. Also I noticed that the HT secondaries had been disconnected (for testing the PT) but the Heater Secondaries hadn't. Maybe with any luck they forgot to remove the valves when testing. Doubtful but you never know. I'm hoping to do some testing this week. I'll upload photos later.
. I don't think I'll do the tonal mods as I have my own ideas for that, but the bias pot is a good idea and I may utilize the internal fuse holder for the HT.