开云体育

After putting up with a horrible volume control in my HQ-129-X receiver for years, I finally got around to replacing it.
( I have had the replacement pot in stock now for at least a couple of years, but it works superbly and was a good fit..... Thanks to Mark Oppat.)

The problem is that the HQ-129-X has a front panel that is spaced about 1/8" from the front chassis apron. Several of the controls (including the volume control) mount to the chassis with nuts and the shafts extend through the hole in the front panel to receive the knob. It would appear that the normal procedure would be to remove the front panel in its entirety in order to access the control mounting nut.

I really didn't feel like doing this so I made a wrench out of heavy gauge sheet metal. This allowed me to insert the wrench into the narrow gap and loosen the nut. The nut could then be unscrewed by poking the flats with a small screwdriver. Before removing the nut all the way, I taped some hook-up wire to the pot shaft. As I pulled the old pot out, the wire followed, trapping the nut more or less in place. I then taped the wire to the shaft on the new pot and fed the pot shaft through the hole in the chassis. The wire allowed me to position and re-start the nut with little difficulty. Once the pot was in position, the nut was tightened with the home-made wrench.

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The moral is that the special tool (home-made) is your friend.?? Either fabricate an "S" bend wrench out of flat stock or get out your torch and bend a cheapie end wrench of the correct size from Harbor Freight.?? Be sure to use the wire trick.?? If you can't get a small screwdriver in to turn the nut once it is loose, a large diameter soda straw or similar piece of tubing can be slid over the wire and then the pot shaft and through the outer panel to remove the nut.?? After inserting the new pot, start the nut with the tubing and tighten with the custom wrench.?? After all is done, then and ONLY then, remove the locating wire.

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Good Luck,