AC30 (TBX) stopped working.

[pdf64]

This is not the circuit with the flawed standby switch wiring. That is the AC30CC2. The AC30 Top Boost Sea Cheif has is correctly designed with no hot-switching, however as noted the standby serves no real purpose.
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https://el34world.com/charts/Schemat...x_ac3093pa.pdf

It seems reasonable to describe the Marshall designed / built TB/X as having a hot switching standby. ie in standby, the reservoir cap remains uncharged.

[Greg Robinson]

https://el34world.com/charts/Schemat...x_ac3093pa.pdf

It seems reasonable to describe the Marshall designed / built TB/X as having a hot switching standby. ie in standby, the reservoir cap remains uncharged.

You're quite right, my apologies. I did make sure to look at the schematic before I posted, but apparently saw what I expected to. Think I somehow mistook the choke as the standby, I clearly need to pay better attention.

[Sea Chief]

Hi chaps,

got the new fuses, put one in.. & back working again. I do have a minor fizzy hum now, but the back is off/ hope this will F-off. So I'll monitor things & update.

A huge relief though- got my fingers crossed. Very grateful for the replies.

Hi there pdf64 HNY to you.

SC