hello,
my old grundig receiver R 2000 is not able to keep fm frequencies stable. I think the voltage for the cap-diodes is variing. I've been told that the most probable defect is
to find in the voltage stabilizing IC TCA530. It turned out, that this IC is very rare. Even Grundig developed a replacement circuit on a small board. As far as I know other people have the same difficulties with similar audio devices
from other brands such as SABA.
Does some know a source for this IC or does he know the replacement circuit?
I would be very glad to get a positive answer.
greetings hans p
my old grundig receiver R 2000 is not able to keep fm frequencies stable. I think the voltage for the cap-diodes is variing. I've been told that the most probable defect is
to find in the voltage stabilizing IC TCA530. It turned out, that this IC is very rare. Even Grundig developed a replacement circuit on a small board. As far as I know other people have the same difficulties with similar audio devices
from other brands such as SABA.
Does some know a source for this IC or does he know the replacement circuit?
I would be very glad to get a positive answer.
greetings hans p
That post by malaz, besides being 15 years ago was also his one and only contribution to the forum... I think you would be very lucky to hear anything back, however 
I suspect so unfortunately. The TCA530 is a very old device. Maybe your best chance is to try and locate some other products that use that chip and look for some cheap scrap units in the hope the IC is good.
Yes, it's a big problem but I don't want to part with my Grundig R45, I'll keep looking. Thank you very much for the answer
best regards
best regards
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