[TechAssist] Re: PHILLIPS 25TR19C121 25F800 runs 3 TO 4 Sec
- From: "John Conti" <contitv@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 17 Sep 2005 13:35:32 -0500
Chuck, Check to see if you have horz. drive at the base of horz. output if
so check for bad vertical output ic p/n 932 212147 687. Pin 5 to ground
should be about 8 ohms. Pin 6 should have a vertical drive out if not bad.
Also replace d6404 a regular diode to a 75volt zener diode p/n 933 1180000
133. Also check the setting of the G-2 on the flyback this is a critical
adjustment.
John
Conti,sTV
Texasl
>From: Eric Manuel <tvman@xxxxxxxxxxxxxxx>
>Reply-To: techassist@xxxxxxxxxxxxx
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: PHILLIPS 25TR19C121 25F800 runs 3 TO 4 Sec
>Date: Sat, 17 Sep 2005 15:13:50 -0230
>
>Hi Chuck did you check this one..Eric
>R3488 4.7 Ohm loctated to rear of F/B connectec to pin 3 vert IC
>
>MAGNAVOX 25F800 Gray screen with retrace lines at startup. Then
>the tv shutsdown. Check for open R3485. If open, replace with jumper
>wire.( Philips tech supp)
>
>
>
> Eric
>E M Electronics
>59 Wights Rd
>Deer Lake NL
>Canada
>A8A 2J2
>Ph# 709 635 2627
>tvman@xxxxxxxxxxxxxxx
>
>
>
>
>
>chuck wrote:
> > Hi All
> > this chissia is driving me crazy.I have sean this before and just change
> > out IC 7401 and took care of the problem.But so far I have change the
> > following parts and still the same IC 7401,D6404,D6403,
> > R3491,3490,and 3340 on the crt board 10 ohm. so now i'm lost
> >
> > Thanks
> > Chuck Staples
> > Staples Tv
> > Phippsburg Maine 04562
> >
> >
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