JP1 Remotes

[Jag_Man653]

For some time now the front panel head phone jack on this unit
has been a bit flaky. Any giggling of the cable will cause cutting
out on one or both channels. My guess is I could replace it if
(a) I can get the box open to get at it, and (b) the part is available at the local electronics store. Any surprising in store for my if I dip into this?

TIA

Ed
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JagMan

[zaphod7501]

I personnaly have not seen a jack on one of these fail but it could happen. What is more likely is that it has come unsoldered from the little circuit board it is attached to. The Sony part number is 1-568-151-11 which subs to 1-568-151-31. It may or may not be available if someone still has one in stock (it has been discontinued). A standard jack could be wired in fairly easily since it is a simple jack with no internal switches needed.

EDIT: Sometimes I forget that some things I consider trivial can be a challenge to others.

To remove the cabinet: 2 screws on each side , one on the back. Lift the case straight up, do not tilt.

You might be able to examine the soldering at this point.

To remove the front panel (the bracket holding the jack cannot be reached until the front panel is moved out of the way):
Pull the speaker switch knob straight off then 3 screws from top, 3 from bottom. You should be able to remove the panel at this point. There are 2 flex harnesses that push into connectors, one the main board and one on the volume board. You can pull these straight out to allow the panel to move forward. The volume board can be tricky to get past the framework so you need to be carefull there. Note that the front panel includes the front feet so put a support under the unit or it will drop unexpectedly as you remove the panel.

The clip that holds the jack in place can be removed to release the jack now. If you replace the jack you will probably get one with a nut to hold it in place. Hopefully there will be clearance for it, otherwise you may have to bend the bracket a little or space the new jack with washers. You might be ble to do this without removing the flex cables and just pulling one side of the front panel forward, since it is a clip holding the jack assembly if you are carefull.

As long as you don't take the bottom cover plate off (and you unplug it) there is very little danger of a shock. Take the bottom off and the filters can weld a scredriver to the frame.
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Just call me Zaphod (or Steve) --- I never should have started using numbers in a screen name but I just can't stop now.

[Jag_Man653]

[zaphod7501]

No, I looked up the service bulletins and didn't use the incorrect number listed in the original manual. You should contact the distributor and have him check HFP308 (Hi Fi Service Bulletin #308) otherwise you will get a 27 pin circuit board connector. I have access to ESI (the distributor will know what that means) from my 25 years as an authorized Sony servicer.

I learned many years ago that before ordering parts to check all resources first. The ESI database is very usefull for things like this. If the distributor enters the 156851521 he should see that it is not the right part.
_________________
Just call me Zaphod (or Steve) --- I never should have started using numbers in a screen name but I just can't stop now.

[Jag_Man653]

[zaphod7501]

There are only a few wires going to the jack board. Just enough for L, R, and Ground, nowhere near 27. Plus the full description is for a 27 pin push-in connector for a flat, mylar wiring harness. The original service manual probaby had the digits transposed (515 vs 151). Sometimes when they do that the number is nonsense, sometimes random. It just depends on which digits are swapped. 1-568-xxx-xx are probably all jacks of some sort. If they had swapped the 1-568 part around then you would have some completely different type of part (a bare circuit board or high voltage transformer).
_________________
Just call me Zaphod (or Steve) --- I never should have started using numbers in a screen name but I just can't stop now.