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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Audio problem with Sharp cd player.
I have a Sharp 3 in 1 unit model no: CD-JX3X(GY). It originally had an
intermittent audio fault which I traced back to dry joints on two IC's (IC 441 and IC 421) which are connected to a large heat sink. After re-soldering the dry joints I then noticed that only the left audio channel worked. Further investigations revealed that IC 441 was blown so I ordered a new one and replaced it. However this has not fixed the problem and I still only have audio from the left hand side. Does anyone here have any suggestions as to what I can do to fix the problem. I would have assumed that the blown IC and the lack of RH audio would have too of been more than coincidence, but replacing the IC did not fix the problem. The only other thing is that the new IC is also faulty but I wont know without trying another one I suppose. Thanks in advance, Troy. |
#2
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Audio problem with Sharp cd player.
What about the speaker and/or headphones that the RH audio output connects
to ? Have you checked that the audio output IC is getting supplies and audio input ? If there's a headphone jack socket, have you checked to see if it's faulty ? Do you have missing audio on all inputs ? Are there audio out (phono) sockets on the unit ? If so, are both channels present ? etc,etc. "Trueman" wrote in message om... I have a Sharp 3 in 1 unit model no: CD-JX3X(GY). It originally had an intermittent audio fault which I traced back to dry joints on two IC's (IC 441 and IC 421) which are connected to a large heat sink. After re-soldering the dry joints I then noticed that only the left audio channel worked. Further investigations revealed that IC 441 was blown so I ordered a new one and replaced it. However this has not fixed the problem and I still only have audio from the left hand side. Does anyone here have any suggestions as to what I can do to fix the problem. I would have assumed that the blown IC and the lack of RH audio would have too of been more than coincidence, but replacing the IC did not fix the problem. The only other thing is that the new IC is also faulty but I wont know without trying another one I suppose. Thanks in advance, Troy. |
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