[TechAssist] Re: 27R411T RCA TV Chasssis ITC008FHM
- From: "jonas miglinas" <miglinasj@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 28 Apr 2005 19:43:52 -0500
Hello Carl,
Lift one end of diode DL062(pincushion protect, near flyback) and see if it
stays on. If it stays on, repair or replace standup pincushion board. I also
would at least remove and clean the glue from CV006, CV007, and RV001 from
pin #17 IV001.These three can cause no horizontal sync and or shutdown. Or
better yet just replace them.
CV006 = 256858
CV007 = 244072
RV001 = 256743
Jonas Miglinas
Miglinas TV
Chicago
----- Original Message -----
From: "CARL HURT" <churt-savannah@xxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, April 27, 2005 11:15 PM
Subject: [TechAssist] Re: 27R411T RCA TV Chasssis ITC008FHM
> I'm having problems with this chassis, It goes into shutdown in about a
> second.
> The shutdown leg of IC IV001 pin 36 EHT is 2.3 volts sams says it should
be
> 2.00 volts. it should take 3.6 volts to go into shutdown.
> I assume it's not in overvoltage shutdown.
>
> I removed MAV board. still shutsdown.
>
> I'm Removing tuner tomorrow.
>
> The IPO30 regulator has all the correct voltages except pin 1 which is 11
> volts. This is high because of shutdown , I think.
>
> All power supply voltages are correct.
>
> I changed the eprom.
>
> Drive signal at Hor Driver transformer looks normal.
>
> All diodes in secondary of flyback look good. No shorts
>
> Any help or suggestions welcome.
>
> Carl Hurt Electronics
> 3513 Budreau Av.
> Savannah, Ga, 31408
> 912-964-2275
> churt-savannah@xxxxxxxxxxxxxxxx
>
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