[TechAssist] Re: Mits. VS6043 Shutting off
- From: "Leonard G. Caillouet" <lcaillo@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 21 May 2003 11:25:17 -0400
This is a VZ3 chassis.
From Mitsubishi for intermittent shutdown:
1. REPLACE L5A00,IF COIL IS WRAPPED IN BLACK TAPE,WITH PT#351P138020, (THE
NEW COIL SHOULD BE WRAPPED WITH YELLOW TAPE).THIS IS LOCATED ON THE
MAIN-PCB.
From Mitsubishi for shutdown at power on:
1. SHORT DETECT SHUT DOWN (PIN 15 OF IC700) CHECK FOR OPEN L902 PART #
351P070010 OFF Q904 C (15 V SUPPLY) ON THE MAIN PCB. 2. CHECK FOR LEAKEY
D5A21, PART # 264P045040, IN THE BEAM PROTECTION CIRCUIT ON THE MAIN PCB 3.
CHECK D5A09, PART # 264P244030 OFF OF PIN 6 OF IC5A01 ON THE MAIN PCB.
From Mitsubishi for beam current shutdown:
1. EXCESSIVE BRIGHTNESS, CHECK FOR LEAKY Q6R1 (RED CRT PCB), Q6G1 (GREEN CRT
PCB) AND/OR Q6B1 (BLUE CRT PCB). PART # 260P267020 2. NORMAL BRIGHTNESS,
CHECK FOR LEAKEY D5A21, PART # 264P045040, IN THE BEAM PROTECTION CIRCUIT ON
THE MAIN PCB
Also check for coolant leakage carefully, and I mean very carefully. I have
seen several of these with very small leaks that were not evident at the
tubes but only a little fluid on the board.
There is a mod for jitter problems with sources with flaky sync. If you
need it or any copies of the manual, contact me.
Leonard G. Caillouet
Service Manager
Electronics World
Gainesville, FL
352-332-5608
352-332-5668 (fax)
----- Original Message -----
From: "Valley TV" <valleytv@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 21, 2003 9:03 AM
Subject: [TechAssist] Mits. VS6043 Shutting off
>
> Hi everybody!
>
> Last night I stopped at a home with a shutoff problem on a Mitsubishi
VS6043. I was late arriving and the customers both had to go to work so I
only had 25 minutes which meant NOTHING accomplished. The set comes on when
cold and plays perfectly for 15 minutes and then goes off. Set comes on
again (without unplugging) after waiting a few minures but very quickly goes
off. I searched for bad solder connections and went over a few but no luck.
Anyone have a clue because this is one model that I honestly have very
little experience with.
>
> TIA
>
> Gary
> Valley TV
> Berwick, Pa office
> --
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