Circle Sound Amp - No Sound

[polo16mi]

Bulb limiter is useful saving components. An alternative is dont use it, but.... everytime that something goes wrong, and some component die, you´ll pay the cost ($$$)

I recomend use it. Is no big deal. Just carefully mount it. No need to touch anything with tension.

[joecool85]

I see 4 fine wire links that look like fuses, in series with each output transistor.
You have 4, to the left and right of the driver transformer.:
Left down looks normal (straight); left up looks like it heated somewhat (slightly bent and darker) ; right down more so and right up looks destroyed.
Follow the tracks to confirm and in general hand draw the schematic.
Not that difficult with some patience and good background music (no pets/kids/wifey within the room)
The 2N6254 look original (mat be blown or good, testing will tell) and the 2N3773 is not original.
Use the lamp limiter, disconnect speakers, measure and post both power rails (+V and -V) and what DC voltage you measure across the speaker terminals.
Good luck.
PD: nice find, that amp sure looks cool and is very repairable.

Good eye, I didn't see that at first.