If all the fuses are OK, then the power transformer probably isn't getting
voltage from the turn-on relay. Does it click when you press the Power
button? CNV902 gets no AC voltage to speak of til this relay fires. (I
assume your voltmeter is set to measure AC voltage)

Mark Z.


"ampapa" wrote in message
om...
Sorry if this is a double post.

Mark, are you saying there might be a fuse literaly underneath a
circuit board and not necessarily hidden from view by a circuit board?
I checked about 5 or 6 fuses in this thing and all checked fine.

My biggest problem is that when I read the schematic I can't tell if
the transformer is supposed to be getting 110v from the A/C board on
CNV902? If it is then I can trace it from there. That's my real
dilema.

The schematic can be found here
(http://www.eserviceinfo.com/index.php?what=search2).

Thanks,


"Mark D. Zacharias" wrote in message
...
These models often have fuses sort of hidden under a circuit board
attached
to the transformer. If these fuses are blown you probably have a blown
amp
channel. Sometimes just the output transistors for a given channel are
bad,
sometimes there are other small parts bad. Occasionally a circuit mod is
required to lessen the bias at startup.

Mark Z.


"ampapa" wrote in message
om...
First off I'd like to say, "Hello." to the group. I hope I can gain
some knowledge from the group's collective input.

I have a Sony STR-DE635 stereo receiver that will not turn on and I
would like to investigate into maybe seeing if I can repair it. I
found a set of schematics on this site which I believe will
definitely help.(http://www.eserviceinfo.com/index.php?what=search2)

I'm guessing but I think that the problem is related to the power
supply? On p.13 of this .PDF manual it has an A/C and D/C schematic,
this receiver has a seperate board for each. I probed the A/C board
and found that it has voltage out to the "Digital" board of a little
over 12 volts but when I try to test the pins on CNV902 I thought I
should be getting appx. 110 A/C but only get appx. 2? CNV902 is a
simple 2 wire connector leading directly to a transformer.

My common sense is telling me that why would I need a transformaer
the size of Kansas for only 2 volts A/C? So, I'm guessing this might
have something to do with it? I could be in left field due to my lack
of knowledge and inexperience, that's why I'm hoping you guy's/girl's
can shed some light.

Thanks for any suggestions or hints you can provide.