Amstrad Amplifier Repairs
Amstrad Integra 4000 MK2
Well it had to happen one day, (an Amstrad moment!) got this needing repair, just a hum from the amp, turned out the two IC's in the pre amp had given up and all the small capacitors needed replacing. For some reason the IC pins were in a staggered layout. I suspect the PCB maker couldn't do close spacing track etching. I used IC sockets and bent the pins on those rather than the actual IC's. Sounded ok after repair, Amstrad's idea of quadsound is putting the rear speakers in series with the main ones and out of phase!