No audio no PA,meter moves on TX,no modulation. Replaced Audio Amp with TA7222AP. D11 clipped.Any help is appreciated https://linksharing.samsungcloud.com/tuQuqi01aDkQated.
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Cobra 29 NW LTD no RX, TX ok no Modulation
- Thread starter Bombardier
- Start date
The radio in the pic looks like the post-2006 radio with an audio chip type YD-1022.
Not a TA7222P. The audio chip in the pic has pins 1, 5 and 6 grounded. The schematic for the YD-1022 shows those three pins to ground.
The TA7222 has pins 3, 7 and 8 grounded. But not on this radio.
Shoulda read the number off the old chip before choosing a replacement. If you really did put a 7222 into it, you should never hear any audio from it with that part.
It needs the same type chip that it was wired to use.
73
Good day, the YD-1022 chip,is this the one that is obsolete? Thank you.
BJ radionut
Supporting Member and 6m addict
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