[TechAssist] Re: [TechAssit] RCA - 27" TV - PMR623ER - CTC130A - Dead - Shorted HOT
- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 14 Oct 2005 17:23:00 -0400
Eric, CR426...I can find it in the MTT module but can't read the part
number. Part looks like a zener diode, could you please confirm this. David
Lessard, Alexandria, Ontario, mr_fixit@xxxxxxxxxxxx
----- Original Message -----
From: "Eric Manuel" <tvman@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, October 14, 2005 4:58 PM
Subject: [TechAssist] Re: [TechAssit] RCA - 27" TV - PMR623ER - CTC130A -
Dead - Shorted HOT
> David check this out..Eric
>
> CTC130A DEAD LEAKY CR625 IN MTT002B TUNER CONTROL MODULE
>
>
> Eric
> E M Electronics
> 59 Wights Rd
> Deer Lake NL
> Canada
> A8A 2J2
> Ph# 709 635 2627
> tvman@xxxxxxxxxxxxxxx
>
>
>
>
>
> David Lessard wrote:
> > Follow-up:
> >
> > Replaced HOT, and R426 horizontal drive +B, resistor value was up by
> > 800ohms. TV pulses ON/OFF when ON" button is pressed, TV comes on for a
> > brief second as power cord is unplugged. I've replaced C672, C654 and
C656.
> > When I disconnect RED wire on standup board next to VIPUR TV pulses
ON/OFF.
> > What am I missing? What are the start conditions for this chassis to
> > fire-up? I know nothing about this 25 year old chassis. Thanks in
advance.
> > David Lessard, Alexandria, Ontario. mr_fixit@xxxxxxxxxxxx
> >
> > ----- Original Message -----
> > From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, October 03, 2005 9:57 PM
> > Subject: [TechAssist] Re: [TechAssit] RCA - 27" TV - PMR623ER -
CTC130A -
> > Dead - Shorted HOT
> >
> >
> >
> >>Yes.
> >>Dead,5A fuse blown. Fix: Shorted cap C425 (043uf@200V) yoke return I
> >
> > think.
> >
> >>After you get it on, here's some issues you may face:
> >>Brightness a bit exessive,retrace: C122 (30uf@250V) front of flyback.
> >>Raster narrow at sides, slight bow: Q1 on pincushion upright board near
> >>rear of chassis. RCA#146847/2N2222A,checks OK-replace it.
> >>Channels 2-6OK, no 7-13. Open and resolder all stakes inside the MTT001
> >>module.
> >>Bands of interference (two) slowely moving up thru picture.: Inside the
> >>MTT001A, change C654(100uf/16v),C672(220uf/25V),C656(330uf/10V).
> >>Immediate shut down at turn on:Flyback bad.
> >>Vert. retrace at top inch of screen.All assoc. caps seem to ESR OK.
> >>R506(6800ohm/2W) runs hot normally.Remove,scrape leads and resolder.
> >>Left side jailbars: Workaround: Add a 10uf/250V cap across CRT's PC
> >>board's stakes, pos. to "C6", neg to "Z1".(saves pulling chassis)
> >>Excess brightness: C122 (47uf@250)
> >>Unusual brightness issue: Increase brightness with control,all sudden at
> >>max: R721 (680ohm) increased to 690ohm. Also: Q703 shorts
> >>(#143806/NTE159).HTH.
> >>Phil
> >>
> >>Philip Bader
> >>Jan Phyl TV Inc. (estab. 1976)
> >>3420 Recker Hwy. Winter Haven, Fl. 33880
> >>Fax (863) 299-8821
> >>email: tjanphyl@xxxxxxxxxxxxxxx
> >>personal/ alt. email: pbader@xxxxxxxxxxxxxxx
> >>see our ad at:
> >>
> >
> >
http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.c
> > om/
> >
> >>
> >>
> >>David Lessard wrote:
> >>
> >>
> >>>This TV has a shorted HOT (C1308K), main fuse is blown. Are there any
> >
> > common problems besides a bad flyback which could cause this?
> >
> >>>Thanks in advance,
> >>>David Lessard
> >>>Alexandria, Ontario, Canada
> >>>mr_fixit@xxxxxxxxxxxx
> >>
>
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