My son was given this amp in something of a sorry state. I gave it a quick clean inside and out, and removed a bit of snipped off component leg which was floating about, and it worked! The 'Equalizer' and 'Surround Sound' buttons didn't light up when pressed, but that didn't matter as it was only going to be used for playing music from his computer.
It worked for a few weeks, but now switches on but there is no sound. I couldn't hear or feel the speaker protection relay clicking, so I removed and checked it - it clicked when 6v dc was applied, and there was no voltage at the terminals when installed on the board. I replaced a 1uF 100v capacitor and a C2235 transistor next to the relay without effect.
I can't seem to find any information or diagrams for this amp - could anyone advise on what else I could check? I can use a multimeter and a soldering iron and follow (simple) instructions, and recently restored an old transistor amplifier with help from an expert on Vinyl Engine. I know it's not a great amplifier, but it sounded fine, and I'd be interested to learn!
It uses Toshiba A1939 and C5196 transistors, and this is the relay. The capacitor and transistor to the left are the ones I replaced, and you can see the generally grimy state of things....
I would be very grateful if someone could point me in the right direction!
It worked for a few weeks, but now switches on but there is no sound. I couldn't hear or feel the speaker protection relay clicking, so I removed and checked it - it clicked when 6v dc was applied, and there was no voltage at the terminals when installed on the board. I replaced a 1uF 100v capacitor and a C2235 transistor next to the relay without effect.
I can't seem to find any information or diagrams for this amp - could anyone advise on what else I could check? I can use a multimeter and a soldering iron and follow (simple) instructions, and recently restored an old transistor amplifier with help from an expert on Vinyl Engine. I know it's not a great amplifier, but it sounded fine, and I'd be interested to learn!
It uses Toshiba A1939 and C5196 transistors, and this is the relay. The capacitor and transistor to the left are the ones I replaced, and you can see the generally grimy state of things....
I would be very grateful if someone could point me in the right direction!