Help Removing Bassmaster (YBA-1) Chassis

[Andrew M]

Boring topic I know, but I am stumped here. I have removed 4 bolts on top and two on each side and assumed I could slide the chassis out the back. It can not fit out the back, what am I missing here?

Thanks,

Andrew M.

[52 Bill]

It can not fit out the back, what am I missing here?

Try checking the top panel to see if it's removable. Some of those Traynors had a top panel that would lift out, opening up the inside of the chassis for repairs. It may be painted or stuck in, but they do come off.

[Andrew M]

Got it now, thanks. I got the top off. I don't think it had ever been opened before and was stuck on pretty good. It looks completely stock, I am not planning on messing with it, just adding a 3 prong cord before I see how it sounds.

Thanks,

Andrew M.

[Bruce / Mission Amps]

Got it now, thanks. I got the top off. I don't think it had ever been opened before and was stuck on pretty good. It looks completely stock, I am not planning on messing with it, just adding a 3 prong cord before I see how it sounds.

Thanks,

Andrew M.

Those lids are aways stuck.
Wow... you sure you don't want to mess with it?
I've rebuilt quite a few of them and almost ALWAYS, the paper covered filter caps are blown or vented out from over heating.
I'd replace all the high voltage caps in the B+ supply and any other electrolytic cap on the board... especially the bias filter caps.
Modern 80uF to 100uF caps at 350v are easy to find.

[Andrew M]

Yeah, I guess it will need a cap job - it looks like a early 70s model (the schematic is dated 1972). It came with a 2 x12 cabinet (YT-12) so it should be a pretty solid setup. The schematic looks pretty much like a bassman, except for a mid boost in there.