[TheList] Technical Assistance

Fri Aug 16 20:15:54 AEST 2013

Hi John

The circuit I have has a TDA1905 for the audio, I'd check the output on pin
1 before buying a replacement chip.

Just to eliminate the cap and audio socket.

Cheers

Mike

From: TheList [mailto:thelist-bounces at radiowiki.org.nz] On Behalf Of John
Barnhill
Sent: Friday, 16 August 2013 2:29 p.m.
To: thelist at radiowiki.org.nz
Subject: [TheList] Technical Assistance

Wondering if any among the group has had anything to do with the Uniden
UBC780 xlt scanner. Have one in 'mint condition' apart from a fault of no
audio. Using the 'tape output' into a stand-alone audio amp - perfectly OK.
Suspect the Audio Amp IC (NEC 7808) has gone '10 zero' Any suggestions where
a replacement IC could be obtained, "Digi -Key Corp" show it as a 5.5Watt
audio amp chip, but not indicating any stock.

Thanks,

John B

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