[TV] Re: Mitshubishi WS-B55 green LED just blinks

[Tony Hubbard <tvtech1969@xxxxxxxxx>]

I don't think it stopped blinking after 70 seconds in the customers home I
have the chassis in the shop now I did not bring in the key pad. A funny
thing happened though I put a light bulb across ed the main power supply
relay to see if the secondary voltages would come up and no voltages were
there then I took the lamp out and plugged the AC back in and the set
powered  itself on after a minute and the picture is ok, so I disconnected
the AC again and waited a minute and reconnected it waited 60 seconds and
turned it on and it came on.
Tony

On Mon, Mar 2, 2009 at 3:01 PM, Jeff Ostroff <stroff@xxxxxxxxxxxx> wrote:

>
> Hi Tony,  I've done a few of those that needed the E2P PCB inside the DM
> module along with the caps.
> Does it stop blinking after 70 sec. of plug in?
> Check for +5V on pins 4&5 of the RF connector on signal PCB if none or low
> try and unplug the front panel switch board.
> If +5V is good suspect the E2P PCB their cheap.
>
> Jeff Ostroff
> A-V Electronic Service
> Sedona,  AZ  86351
> www.avelec.com
>  ----- Original Message -----
> From: "Tony Hubbard" <tvtech1969@xxxxxxxxx>
> To: <tv@xxxxxxxxxxxxxxx>
> Sent: Thursday, April 02, 2009 9:28 AM
> Subject: [TV] Re: Mitshubishi WS-B55 green LED just blinks
>
>
> >
> > The diodes don't check shorted and the voltages on the plug connectors
> check
> > good the ones that are marked anyway. The customer said it just went off
> > when she used the volume down on the remote. Any other help would be
> > appreciated.
> > Tony
> >
> >
> >
> > On Wed, Apr 1, 2009 at 1:33 PM, <Eric7828@xxxxxxx> wrote:
> >
> >>
> >> I found this:
> >>
> >> Symptom: Timer Led Won'T Stop Blinking Even After Changing All Seven
> Caps
> >>  On
> >> The Dm Power Board. (None Of Them Were Puffed But All Were Bad).
> >>
> >> Cause: Q9b01 (8 Pin Ic) Is Shorted On The Dm Power Bd. This Makes D9b00
> >>  And
> >> Zener D9b04 Look Shorted But Are Not.
> >>
> >> Fix: Either Replace The Ic (Fairchild FDS6680A) Or The Dm Power Board.
> >>
> >> Eric,
> >> Rick Electronics in NYC
> >>
> >>
> >> In a message dated 4/1/2009 1:26:28 P.M. Eastern Daylight Time,
> >>  tvtech1969@xxxxxxxxx writes:
> >>
> >>
> >> Mitshubshi WS-B55 Green LED just blinks I replaced the 7 1000mf  16v
> >> capacitors in the DM power board and it still won't power up. I know
>  that
> >> when you plug in the AC cord you have to wait 80 seconds before you  can
> >> turn
> >> it on but still no good. Any help would be appreciated.
> >> Tony's  TV Repair
> >>
> >> Tony
> >>
> >>
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