[TechAssist] Re: Philips 32PT663R37 chassis LO1.1UAC strange shutdown.
- From: Philstv@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 2 Dec 2004 07:28:57 EST
I always replace capacitor 2455 with a 35V47. These cause all kinds of shut
down and start up problems.
Phil Solarz
RAC - National Product Service
Phil's Electronics
C.E.T. GNN3799 - FMIC
734-718-0301
In a message dated 12/1/2004 11:35:36 PM Eastern Standard Time,
support@xxxxxxxxxxxxxxxxxx writes:
John,
I don't know if this will help:
Philips\27PT543S37A L01\FOR IMPROVED RELIABILITY When servicing the L01.1U
AC chassis that uses 25 inch
and 27 inch standard curved face CRT's\always examine capacitor 2462 located
near the Base lead of the
Horizontal Output transistor 7460\\L01\If 2462 is a small blue or orange part
replace it with 2022 333
00084. Use no other part here\\\\\\\\
This from Force:
Symptom:
At turn on the raster appears and rapidly changes colors. Then shutdown
(protection) happens. If placed
into Factory Mode using the 4835 310 57511 FMR remote the flashing will
continue. Sg2 voltage is stable
and clean of disturbance.
Cause:
Open resistor 3451 and shorted diode 6447. 3451 is a stand up resistor and
may be measured in-circuit.
Normal value is between 2 and 10 ohms (varies with model-see Force).
Parts are on top of board at Section 6B.
Resolution:
Replace 3451 and 6447. NOTE: 3451 is a critical Safety part and must be
replaced by the exact
part/value.
Symptom:
Interference in picture.
Cause:
Yoke leads near CRT Dag ground wire
Resolution:
Bundle yoke leads away from CRT Dag ground wire and from tuner area.
CAUTION Do NOT bundle Vertical and Horizontal yoke leads together. Make 2
separate bundles.
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "John at Main TV" <maintv2004@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, December 01, 2004 1:52 PM
Subject: [TechAssist] Philips 32PT663R37 chassis LO1.1UAC strange shutdown.
I have this 32" set made in 2003. The picture comes on with strange colors,
alternating predominately red, green or blue. The focus seems to shift and
there is noise in the picture, like hundreds of tadpoles swimming to the
left. It always comes on with a menu labeled "active control". It will
then shut down in 15 seconds and require 2 power button pushes to turn on
again. Interesting, if I continue to change channels, it will not shut down
but the picture never gets better. All the PS sources and scan-derived
sources check OK. The picture tube does not seem to be shorted. I think it
may be the IHVT but I am looking for another opinion before I order it. I do
have the service manual. TIA, John.
John Mielke
Main TV
636 main St.
Longmont, Co
phone 303 776 6955
fax 303 776 0792
maintv2004@xxxxxxxxxxx
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