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Philco 51-532 transitone squeaks, hums, and crackles (a little bit)
#3

I'm sorry, I forgot. I went back and found a couple of resistors to replace that I had not caught the first time: R5 was measuring at around 200 ohms-should be 68 ohms, and R 4 was measuring way off in place, but when I removed it, it was on the money...I replaced it anyway.

I caught a bigger problem at C 5. I had put in a .0003 uf cap in stead of a .003 uf cap. I replaced it.

I powered it up again, and this time I get no squeals at all, but a buzzing that gets stronger where there seems to be stations on the dial...occasionally, it almost sounds like a signal getting through. Again, the pilot light burns brighter where the signal seems to be. I guess that is normal for an AA5?

http://www.nostalgiaair.org/pagesbymodel...013721.pdf

http://www.nostalgiaair.org/pagesbymodel...013720.pdf

Charlie in San Antonio


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RE: Philco 451-532 transitone squeaks, hums, and crackles (a little bit) - by ccomer1955 - 11-10-2016, 06:27 PM



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