[TechAssist] Re: RCA F31672ET CTC187CL2 Audio
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 26 Nov 2003 17:54:10 -0500
Do you have a print?
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, November 26, 2003 4:02 PM
Subject: [TechAssist] Re: RCA F31672ET CTC187CL2 Audio
> Al,
> Its an NPN, I also lifted the legs on the transistor and still no
> sound..
> Bob,
>
> Bobs TV Worcester, ma
>
> woodman1@xxxxxxxx
>
> Main 508-853-1482
> Fax 508-853-1480
> ----- Original Message -----
> From: "al m" <ampm@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, November 26, 2003 12:15 PM
> Subject: [TechAssist] Re: RCA F31672ET CTC187CL2 Audio
>
>
> > What type transistor is the mute? 0V will turn a P-N-P on and a N-P-N
> off.
> > Al Marquardt
> > ampm@xxxxxxx
> > Al Marquardt Electronic Repair
> > 206 W Main
> > Girardville Pa. 17935
> > ----- Original Message -----
> > From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, November 26, 2003 11:59 AM
> > Subject: [TechAssist] RCA F31672ET CTC187CL2 Audio
> >
> >
> > > Need some help on this one, Set has no sound, with A/V in sound
works...
> > Mute transistor Q1903 Collector has 12V and base has .2V set muted or
> not.
> > pin 29 CPU {mute} 0V muted or not muted..All audio input pins 4 5 7 8
> > input to T chip have 5.1V..pin 61 {vol} goes from 0V to 2.1 as vol
graph
> > goes up..Subbed Eprom and checked audio perimeters in the service
> > menu...Appreciate any ideas.
> > > Thanks in advance..
> > >
> > > Bob,
> > >
> > > Bobs TV Worcester, ma
> > >
> > > woodman1@xxxxxxxx
> > >
> > > Main 508-853-1482
> > > Fax 508-853-1480
> > >
> >
>
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