[TechAssist] Re: Pioneer SD-P50A5-K, need to access service menu
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 29 Apr 2004 12:18:57 -0700
Does anyone know exactly how to access the service menu on the A5-K
series Pioneer chassis? The set is still in the customer's home 22
miles away and I would like to know the exact procedure. I may have to
order the service manual if no one has one. Thanks.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of LeRoy Westlund
Sent: Wednesday, April 28, 2004 9:50 PM
To: TechAssist
Subject: [TechAssist] Re: Pioneer SD-P50A5-K, green convergence problem.
Kevin,
Here is some info I have collected in my data base.
Try this:
Get into factory menu by pressing pinhole on front (cmt on
bottom right appears) pressing mute goes to color, then pressing #
keypad
toggles from color to tint to........( Pressing mute a second time,
"might"
get you into the convergence menu ).
Also check this out:
Convergence Amp assembly is located in back of set on a side-mounted
stand
up board on the left signal board.
Cure: Problem is on Amp Assy. Resolder transistors and regulators that
are
mounted to the heat sink and replace one or both convergence output ICs
(STK392-110).
Models Covered: SDP50A3K, SDP50A3Q, SDP50A5K, SDP55A5K, SDP62A3K,
SDP62A3K,
SDP62A5
One more thing:
On SOME brands of PTVs,
Adjustment of the Vertical Ht., & horz width contols, can effect the
sides,
and, or, corner convergence. Cover Blue, and Red CRTs, and try to adjust
the
Vert HT, and Horz width, by looking at the Green CRT only. Once the
Green
looks OK, then converge the Blue, and Red to the Green.
HTH,
LLW
LeRoy Westlund
Westlund TV & Electronics
97 North Main "Where there's a will,...
Centerfield, UT 84622-0087 There's always a way."
Ph./Fax 435-528-3822
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: Kevin <kevintv@xxxxxxx>
To: TECH-ASSIST <techassist@xxxxxxxxxxxxx>
Date: Wednesday, April 28, 2004 8:39 PM
Subject: [TechAssist] Pioneer SD-P50A5-K, green convergence problem.
>A power surge took out Fuse FU106 and killed the set. Replacing Fuse
>FU106 brought the set back to life, but with the green convergence in
>the upper left and lower right corners off a large amount (pincushion
>problem). The green convergence in the other corners is off as well
but
>not as bad. I tried adjusting the customer convergence (which only
>adjusts the blue and red) with no ability to correct the green
>pincushion in the corners.
>
>The voltages going to the 2 convergence yokes measured 0.045 volts DC;
>they are marked on the board as red and green (the third tube has no
>convergence yoke). I don't have much experience with measuring the
>convergence yoke voltages, but 0.045 seems wrong to me.
>
>Does this sound like a circuit problem, or do I just need to access the
>service menu? Does anyone have the service manual for this set or a
>similar one that shows how to access the service menu? Thanks.
>
>Kevin Wilks
>Kevin's TV & Video Repair
>Penticton BC Canada
>kevintv@xxxxxxx
>
>
>
>
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