[TechAssist] Re: Pioneer SD-P6091-K RPTV, low contrast and will not adjust
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 1 Oct 2005 16:00:39 -0400
I had that problem on a CTC169 PTV and it ended up being a shorted cap off
the flyback to the contrast circuit.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "Cruz M Reyes" <reyes9159@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, October 01, 2005 3:58 PM
Subject: [TechAssist] Re: Pioneer SD-P6091-K RPTV, low contrast and will not
adjust
>I think I know What the problem is on this tv but I
> can't remember at this time cause I fix that kind of
> problem more then a year at go if I remember I let you
> know I know I change a small Ic but if I see the
> schematic I will remember just let me find it I hope I
> find it soon thanks:Manuel
>
> --- Jim Myers <jr.myers@xxxxxxxxxxx> wrote:
>
>> Does anyone know if there is a tech assist number
>> for non ASC's on
>> Pioneer? This is eating my lunch in a big way. I
>> have replaced the
>> EEPROM, the micro, the jungle and the A/V board and
>> still no change,
>> also had to purchase a service manual since no one
>> offered one when I
>> asked. Just weak video with no adjustment of
>> contrast or brightness.
>>
>> The Old Master Technician
>> ********************************
>> Since 1972 *
>> Jim Myers *
>> Telrad Electronics *
>> Fort Wayne Indiana *
>> ********************************
>>
>>
>> Jim Myers wrote:
>> > I got the service manual for this Pioneer, ABL
>> line seems ok, Y in at
>> > the jungle IC pin 58 looks good with a staircase
>> signal but the R,G and
>> > B outputs at pins 29, 30 and 31 look bad, the
>> stairs steps are almost
>> > level at the top. Brightness and contrast
>> adjustments have no effect
>> > although the numbers change from -32 to +31. The
>> jungle IC has been
>> > replaced. I'm now thinking that the micro or
>> eeprom may be bad. Would
>> > anyone have any knowledge or ideas on this
>> problem?
>> > Thanks,
>> >
>> > The Old Master Technician
>> > ********************************
>> > Since 1972 *
>> > Jim Myers *
>> > Telrad Electronics *
>> > Fort Wayne Indiana *
>> > ********************************
>> >
>> >
>> >
>>
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