[TechAssist] Re: Mitsubishi VS-55707, VZ8 chasssis. dead,push power, double click

  • From: "Damon" <damon101@xxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 11 May 2005 08:02:26 -0500

Did you scope the 130V line for OVP? Does the HV come up/shutdown or no
response? The quick clik-clik of the relays steers me in that
direction....if it is QUICK that is....

Damon Brunger
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, May 10, 2005 4:00 PM
Subject: [TechAssist] Mitsubishi VS-55707, VZ8 chasssis. dead,push power,
double click


> Customer said months ago there was a power surge (or interruption) at
> their home. When power restored, TV stayed off. Power company said no
> way it was their fault.(yeah).
> All fuses I find OK. Main AC fuse OK, FC902 (2A GMA) ,FC903 (4A GMA),
> F904(6.3A GMA).
> Has 5.01 VDC at I/R det diode sensor. Has +12VDCs. Nothing looks
> damaged.Push power button on remote, power relay does a quick
double-click.
> I unplugged the removable anode from top of flyback that goes over to
> seperate HV divider block, no help. Both HOT power transistors OK: Q5A00
> and Q5A02.
> Downloaded  a few tips... "heck pin 20 IC700 (AC off) for 0 volts. If
> high leaky diode D980" Volts are zero, so thats OK.Never hear any
> HV,just double relay click.
> Nothing in my emails.
> Phil Bader
>
> --
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
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