[TechAssist] Re: Proscan PS31122, CTC169EJ5 dead.( heard one HV surge at turn on) fixed. now bowed side
- From: Gary McCartney <gary@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 13 Jan 2005 17:40:26 -0500
Here are some tips I found for CTC169 bowed picture. Hope something helps.
PIX TOO WIDE & BOWED IN ON SIDES CR4402 ,C4402
PIX BOWED LEFT AND RIGHT EDGES CR4803 BAD, EVEN IF TEST GOOD
PICT BOWED IN, HOURGLASS LOOK Q4802
PICTURE BOWED C4812 LEAKY
Bowed pix edges L4803 BAD CONNECTION
Pix bowed U4801
PICTURE BOWED AT EDGES CONVERGENCE OUT & CONTROLS NOT WORKING.
REPLACE SHORTED C8227 LOCATED FROM BASE OF Q8123 TO GROUND
NARROW WIDTH BOWED IN ON SIDES REPLACE LEAKY C4812 & CR4805 ZENER
DIODE LOCATED OFF PIN 3 U4801.
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
Phil Bader wrote:
> I originally /did/ replace C4401, thats how I got the set up and running
> (one leg cold solder/arced).
> I then had the side bow. I since found pin transistor Q4802 leaky
> (MPS651/200168) and replaced it also, no improvement.
> I replaced C4402 as a test (.056) also no help. Checked the diodes
> mentioned (CR4401,4402) seem OK.
> I pulled and checked transistor Q4803 but tested OK.
> I'm stumped.
> Phil Bader
>
> gulftech@xxxxxxxx wrote:
>
>
>>Probably bad C4401. See the following info:
>>
>>---------------------------------------------------------------
>>Text pasted from WinSTIPS 2.0
>>http://www.ServiceSoftware.com
>>---------------------------------------------------------------
>>
>>RCA CTC169
>>
>>Horizontal Pincushion
>>
>>Bob Waterman Gemini Computer & Tv
>>
>>Replace Diodes Cr4401, Cr4402 And Capacitors C4401, C4402
>>
>>---------------------------------------------------------------
>>
>>---------------------------------------------------------------
>>
>>RCA CTC169
>>
>>Pincushion Bow. No Adjust
>>
>>Lon
>>
>>Q4802 Labeled Q802
>>
>>---------------------------------------------------------------
>>
>>---------------------------------------------------------------
>>
>>RCA CTC169
>>
>>Pincushion Problem- Sides Bowed In
>>
>>William Burkhalter
>>
>>U4801 Lm311n
>>
>>---------------------------------------------------------------
>>
>>
>>Ken Smith
>>Gulf Technical Services
>>3034 Gulf Breeze Parkway
>>Gulf Breeze, FL 32563
>>850-934-8324 (Voice), 850-932-0819 (fax)
>>
>>
>>
>>On Thu, 13 Jan 2005 16:18:43 -0500 Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
>>writes:
>>
>>
>>
>>>I plugged it in, pushed power and one HV surge heard, then dead. Push
>>>
>>>power button again and a low arc noise from acassis.
>>>Inspection found scan cap C4401 (.0162@1600V # 206009) had one leg
>>>arced
>>>in solder hole. I replaced it and the set now powers up with good
>>>pix
>>>and sound except it seems bowed on side like pincushion.
>>>Phil Bader
>>>
>>>--
>>>
>>>Philip Bader
>>>Jan Phyl TV Inc. (estab. 1976)
>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>Fax (863) 299-8821
>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>
>>>
>>>
>>>--
>>>No virus found in this outgoing message.
>>>Checked by AVG Anti-Virus.
>>>Version: 7.0.300 / Virus Database: 265.6.10 - Release Date:
>>>1/10/2005
>>>
>>>
>>>
>>>
>>>
>>
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