wanted service manual for sony sqa

[eric0077]

i have a sony sqa whit a broken transformer it has two blue two red and one black cable coming out and i don t know what the voltage is for the cables
so if anyone can help me whit a schematic for the sony sqa-200 that will help me
would be nice to getting sound out off it playing again
greetingss

 

[Keith Flanker]

You can't get the voltages from the wire colours - they only tell you the winding grouping. With the unit unplugged, measure the resistance across the pairs: the two blues and two reds are most likely two secondaries (or a centre-tapped pair) with the black as the common, and the ohms readings will tell you which wires belong to the same winding. Get the schematic or at least the service manual before you apply power - for a Sony SQA-200 try HiFi Engine/Elektrotanya or the vintage Sony groups, and post clear photos of the transformer label and connector. Guessing a mains transformer's secondaries is a good way to let the smoke out, or worse.

 

[eric0077]

thanks i hoped someone on here got the manuel
hifi engine i can not register and elektrotanya does not have it
thanks for the reply
greetings