Hi All,
I made a little boo-boo and I'm hoping you can advise me on how to proceed:
I have 3 of those record players you used to find in schools (you know the ones, they have lids that hinge off). One of them has a mic input, so I plugged my 360/12 in and it's a great little amp (6L6). The other ones have different tube configurations, so I thought I'd set about adapting them to use as guitar amps also.
Starting with the EL84 model, I decided to bypass the motor since it hummed like a beehive and didn't turn. The wiring goes AC mains>fuse>motor>trannie primary on one side, while the other side goes AC mains>power switches (1 main, 1 motor)>trannie primary. It seemed to me that bypassing the motor should be as simple as cut & splice, but in my typically rank amateur manor, I didn't count on the fact that the motor has a resistance that might be important (100K as I measure it now). So when I turned it on after wiring my bypass it popped and now won't fire up again.
Do you think I blew up the trannie, or just some section of the quad can cap?
I'd like to get it working, but I don't think it's worth a trip to the tech and I've now exceeded the boundaries of my testing knowledge... I can change the caps but the trannie is a different story.
Any advice would be greatly appreciated!
Chris
I made a little boo-boo and I'm hoping you can advise me on how to proceed:
I have 3 of those record players you used to find in schools (you know the ones, they have lids that hinge off). One of them has a mic input, so I plugged my 360/12 in and it's a great little amp (6L6). The other ones have different tube configurations, so I thought I'd set about adapting them to use as guitar amps also.
Starting with the EL84 model, I decided to bypass the motor since it hummed like a beehive and didn't turn. The wiring goes AC mains>fuse>motor>trannie primary on one side, while the other side goes AC mains>power switches (1 main, 1 motor)>trannie primary. It seemed to me that bypassing the motor should be as simple as cut & splice, but in my typically rank amateur manor, I didn't count on the fact that the motor has a resistance that might be important (100K as I measure it now). So when I turned it on after wiring my bypass it popped and now won't fire up again.
Do you think I blew up the trannie, or just some section of the quad can cap?
I'd like to get it working, but I don't think it's worth a trip to the tech and I've now exceeded the boundaries of my testing knowledge... I can change the caps but the trannie is a different story.
Any advice would be greatly appreciated!
Chris