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Mark D. Zacharias
 
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MaxVT wrote:
Hello,

I'm troubleshooting a dead "Brother BR-600XL HiFi Music Center"
(cd-tape-phono-tuner integrated unit). If anyone has info on this
please post - the Internet yields nothing.

The unit is powered by a big (about 2"x3"x4") transformer with two
apparent secondary windings - red-black-red wires both, with red at
ends and black is probably the tap on each.

One of the windings has a capacitor between the 'red' contacts, with
one of the leads also soldered to the black contact, which seems to
have an effect of shorting a part of the winding.

In addition there are two resistors near the transformer, but when
measured they appear shorted, however there is no visible damage to
them.

What could this mean?

Yours, MaxVT


You can disconnect the capacitor to see if it is shorted. If it is, it might
have damaged / ruined the power transformer. The primary can be checked with
an ohmmeter, and should read a near-short. If it's an open-circuit, the tran
is bad. If these tips don't help, you may indeed be in over your head. The
AC input / rectifier stage of a linear power supply is a simple circuit, but
with no training or test equipment, your chances of fixing anything more
than a bad fuse would be slim.

Mark Z.