[TechAssist] Re: RCA DTV307
- From: Dennis Viereck <wa6ati@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 19 Jan 2002 18:41:09 -0800
The diode you speak of is CR14107 pn# 234048.
I had one of these on Wednesday with a leaky CR14107 with no tuning voltage for
the tuner in the DM1 module. I had perfect satellite reception and PIP tuner
was OK. Just nothing from the Main tuner but "No Signal"
There must be 33 vdc at CR14106(K) and about 45 vdc at CR14107(K).
Dennis Viereck
miglinasj wrote:
> I just had one and the culprit was the 33v supply from the dm-1 supply
> board. A diode was leaky to almost being shorted. I'm not at the office
> now and I can't give you a part or location number. But I would carefully
> check the dm-1 supply board for any overheated connections. I also had the
> same chipper numbers you had.
> Regards Jonas
> ----- Original Message -----
> From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, January 19, 2002 3:14 PM
> Subject: [TechAssist] RCA DTV307
>
> >
> > Greetings all:
> >
> > Model: p61310jx2
> > SerialNumber: 108*
> > Chassis: dtv307
> >
> > Cust complaint-high pitched squeal independent of audio, pic is good.
> > Released dm1 power supply and main chassis from cable clamps, etc. for
> > access intending to find and hot glue ferrite bead culprits. Applied
> > power-no tuner video. Video good via inputs. Input video, no pip tuner.
> > Self test dm1 all good. stored error codes, 7,16,136. Cleared. Powered
> > down, unplugged, applied power and checked error codes-none. Still no
> tuner
> > video. PIP tuner video show STATIC not a blank raster. Swap pic, no pic
> at
> > all. Measured DM1 PS connectors to dm1 module at power supply, all
> voltages
> > good.
> >
> > Temp "fix" input video from the VCR.
> >
> > Help! This puppy is an hours drive away.
> >
> > Wayne Vanaman
> > Omega Electronics
> > 6904 W Fairfield Dr
> > Penacola, Fl. 32506-3310
> >
> > 850-456-5995 voice
> > 850-458-6369 fax
> >
> > Mailto:Wayne@xxxxxxxxxxxxxxxxxxxxx
> > WWW.PensacolaTVRepair.Com
> >
> >
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