Delco 16009960 No FM signal - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HunterRotten · 09-24-2017, 03:42 PM

Just bench tested my radio and only FM will play any sound. Switch it to FM and there's nothing at all. No lights or anything. Any help?

lsversaw · 09-26-2017, 07:00 PM

If you gets lights and sound with the switch set in AM, but neither lights or sound when you move the switch to FM, then the AM/FM switch is probably bad.

But what happens if you turn the radio on with the switch is in the FM position? Do you get lights and FM sound? If so, it would change my diagnosis.

And when you start in AM, switch to FM, then switch back to AM, do you get lights and AM sound again? If so, it makes my bad-switch theory more likely.

In either case though, it's repairable. Not necessarily cost effective, but feasible.

Let us know what you find.

09-24-2017, 03:42 PM	#1
HunterRotten Registered User Join Date: Oct 2016 Location: Kentucky Posts: 385	Delco 16009960 No FM signal Just bench tested my radio and only FM will play any sound. Switch it to FM and there's nothing at all. No lights or anything. Any help? __________________ 1978 Hawaiian Blue GMC 454/Tremec TKO 500 BUILD THREAD

09-26-2017, 07:00 PM	#2
lsversaw Registered User Join Date: Aug 2013 Location: McPherson, KS Posts: 86	Re: Delco 16009960 No FM signal If you gets lights and sound with the switch set in AM, but neither lights or sound when you move the switch to FM, then the AM/FM switch is probably bad. But what happens if you turn the radio on with the switch is in the FM position? Do you get lights and FM sound? If so, it would change my diagnosis. And when you start in AM, switch to FM, then switch back to AM, do you get lights and AM sound again? If so, it makes my bad-switch theory more likely. In either case though, it's repairable. Not necessarily cost effective, but feasible. Let us know what you find. __________________ Scott 1972 C20 long-wide. 350/350, Cheyenne Super, wood bed, PS, PB, dual batteries, dual tanks, leaf springs, gauges. No significant rust. No significant paint. 1971 C10 short step. Originally a 250/3ott with no options, now a 350/4L80. I purchased it already restored; only needs about 300 little details fixed.



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