"D Messing" wrote in message
...
I have a car radio/cassette from a 1997 Honda Accord that has an
intermintent problem. Model number is CM6704BA, P/N 39100-SV4-A000-M1.

The radio dial always displays and shows chaning frequency for both AM/FM

All speakers dead, most of the time. I have it on the bench and seem if I
heat it up with the hair dryer it will begin to produce a sound on
speakers like amp is working.

When tapping or twisting stations will begin to come in and Stereo Light
on FM will appear.

When it works it works good. Bump or twist the main board stations will
disapper and rush sound form speakers remains, or speakers become silent
with dial still displaying frequency, but no stereo light..

I have cleaned all sockets with DeOxit.

If I remove the cassette deck to trouble shoot componets beneath the deck,
the display shows tape. I do not know what to jump to simulate the
cassette deck being installed.

Does anyone have a Service Manual?

I think it could be in the area of the crystal or the large intergrated
circuit. But it has been hard to determine what part of the part the
connection is bad or flaky component is located.

I sure could use some help. I have doing electronic repair since the late
50's and have plenty test gear, scopes and sig generators.

73

Dave
K0RWM






You can probably home in, by tapping, on the several square centimetres of
the PCB that has the dry joint or bad connector.

All you then need do is to resolder every joint in that area, it will
probably take no longer than 5 minutes.



I often use this technique to at the very least eliminate a dry joint as a
suspect.
It is amazing how little time it takes to resolder a complete PCB, compared
with the time it takes to actually find the one dry joint.



Gareth.