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Old 1st Mar 2012, 2:32 pm   #18
Don_Zalmrol
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Join Date: May 2009
Location: Ghent, Belgium
Posts: 273
Default Re: Philips B6X12A on the fritz…

The shopping cart at that moment wasn't complete (hence my words "This is my order list so far")

The 16uF/250VDC is C53, and comes from the FM HT valve and leads towards the cat eye B10 (EM80), through the S3 switch.

Since I need to order some other parts, I can get a 15uF/350VDC alu. elco from Distrelec to replace the 16uF/250VDC

Also I've found some other resistors that are looking tired and even some that have scorch marks on them (even one that is burned through)…

The elco's I've replaced so far, definitely needed to be replaced, the soft rubber escape seals on them all are blown (same goes for C53)…
All the other early metal film/ wire wound resistors seem fine, same goes for the yellow (mustard) & silver caps…

I bought this radio from eBay nearly 3~4 years ago, and the seller replaced the EM80 valve and soldered two caps on the 800 Ohms output transformers, the rest was sold as is…

The radio plays, but you definitely hear some humming/ buzzing noise on every channel, when you power off the radio and unplug for a day, the problem seems to be gone. But when you use it again sooner or later that day the problem returns…

So starting with replacing the caps was a good idea!
I will keep you guys apprised of my progress and thank for the help, much appreciated!

Cheers,

Laurens
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