Chosen Solution
My radio receives a signal, or it may be on CD. Unpredictably, the sound cuts off, then comes back, over and over. May be OK for hours, or misbehave every few minutes.
Hi @bobrich18 Looking at the service manual the Volume Control is designated as component #VR701 which has a Sharp component part #QSW-ZA002AWZZ. This is a rotary encoder type control switch and not a resistive potentiometer type control switch. The only supplier found when searching online for a replacement part shows that it is no longer available so you may have to try and fix it yourself as having the easier option of replacing it is not available. Here’s a video that shows how to clean a rotary encoder switch, that may help. The manual I linked shows how to dis-assemble the unit so that access to the volume control encoder switch is possible. Admittedly the manual is not easy to use as you can only view it online and have to alter the page number in the box below the Document box and click Go every time that you wish to change the page. To download the manual so making it easier to use, you have to sign up with the website. If doing this yourself seems too daunting, contact a reputable professional electronics repair service and ask for a quote. If they are not familiar with the system tell them about the service manual and the fact that it is a rotary encoder. If they are any good then after that it will be no problem for them Hopefully this is of some help.
That problem is common with older electronics and is caused by dust in the volume-control pot. Electrical contact cleaner spray usually does the trick. If you don’t want to try this, a professional cleaning at a local electronics repair shop shouldn’t cost much. While you are cleaning the volume control, be sure to clean any other rotary dials such as the tuner and the source selector or balance controls if it is a receiver. Dust in any of these can cause problems.
