[TechAssist] Re: Sanyo AVM3258G with strange problem on tuner input only (FIXED)
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 20 Jan 2003 18:38:30 -0500
The problem was an open R106 (22K, 1/2 watt) on the 33 volt line (this
resistor goes from 130V B+ to 33 volt input to tuner). It through me off
because I had the 33 volts at the tuner. Now someone please explain how this
can be. And why didn't I have just snow? Welcome to Sanyo world I guess!
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
----- Original Message -----
From: "C&W Electronics" <c_w_electronics@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, January 18, 2003 11:03 PM
Subject: [TechAssist] Re: Sanyo AVM3258G with strange problem on tuner input
only
>
> Bob, try lifting the eeprom. (can't hurt) Works on Panasonic and Mag.
>
> Paul W
> C&W Electronics
> Azle Texas
>
>
> ----- Original Message -----
> From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
> To: "Techassist" <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 17, 2003 3:39 PM
> Subject: [TechAssist] Sanyo AVM3258G with strange problem on tuner input
> only
>
>
> >
> > I have a Sanyo AVM3258G that has a weird problem(s) only on the tuner
> input.
> > The A/V input is perfect. I am not a Sanyo ASC so I almost never see
them
> > thus my request for assistance. The TV will either have all snow, sync
> > problems like a bad Mitsubishi PIP board causes, detuning or AFT
hunting,
> > motorboating, or even shortly it will be okay but the pattern keeps
> > repeating at relatively short intervals. I did have the service manual
> from
> > another N.E.W. contract repair for the same model so I checked all power
> > supply, scan derived and regulated voltages throughout the set and all
are
> > good. I had preordered the tuner back in early November prior going to
the
> > customer's home but it has been on backorder all this time. Well I went
> > there today to install it but the symptoms were still identical so it
> wasn't
> > the tuner. I am suspecting the jungle IC (LA76170) but didn't have one
on
> > the truck (nor do I have one here at the shop), so I pulled the set here
> > into the shop. I am order the Sanyo OEM part from Tritronics who has it
in
> > stock but I wanted to toss it out here in case any of you have seen this
> > before and save me a headache if the jungle IC is not at fault.
> >
> > Bob Waterman, CET® #RI-28
> > Master Technician License #9109
> > Service Manager
> > Gemini Computer, TV, & Security Alarms
> > (508)695-7302
> > (508)695-7769 FAX
> > geminitv@xxxxxxxxxxxxxxxx
> > geminitv@xxxxxxx
> >
> >
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