[TechAssist] Re: RCA Proj. P46770CK Chassis PTK169PA. Audio output U1901, U1902?
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 18 Apr 2005 13:19:19 -0500
replace the IC input coupling caps
C1901 and C1902 I believe, both very small 1mfd 50volt
they will cause low audio and also normal audio with buzz in speakers also
will cause intermittent shutdown
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
----- Original Message -----
From: "Robinson Electronics" <RobinsonElectronics@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, April 18, 2005 10:50 AM
Subject: [TechAssist] RCA Proj. P46770CK Chassis PTK169PA. Audio output
U1901, U1902?
> Can anyone that is familiar with this chassis help us?
> My customer said the audio is (low with a buzz) on just the right output
speaker.
> I checked the audio output board that uses 2 aud. output amps, cannot read
all of the numbers on the chip (looks like the first few digits as TDA20xx).
> The capacitors around the ic's check good, no open or bad resistors in the
circuit.
> Can anyone help us with identification of these output IC's? Thanks.
David.
>
> Robinson Electronics
> 1075 Sweeten Creek Road
> Asheville, NC 28803
> Ph./Fax. 828 274-3787
> Toll Free. 1-888 ROBELECT
> www.robinsonelectronics.com
> www.robelect.com
> Mailto: RobinsonElectronics@xxxxxxxxxxx
>
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