[TechAssist] Re: Mitsubishi CS-20SX1 Shutdown.
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 11 Jun 2003 07:44:54 -0400
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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MITSUBISHI CS20SX1
Shutdown, Intermittent
Glenn Watkins Blue Ribbon Tv
Check L911
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MITSUBISHI CS20SX1
Shuts Down Or Intermittent Start Up. Would Have To Unplug To Start Again
Samtronix - Sam Jalal
Problem Was In The X-Ray Protection Circuit
Found C523 Located Under The Pc Board Was Open
Also Found C519 Leaky And Replaced C518 And C515
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Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "RT Technologies" <rthomas903@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, June 10, 2003 7:19 PM
Subject: [TechAssist] Mitsubishi CS-20SX1 Shutdown.
> Set came in and would shutdown after 2 sec. I replaced
> caps off flyback (c513, c514, c515, c516). I also
> replaced c518 (33uf 50v). Tv worked ok all day. Next
> day, it's shutting down again. I went trough all caps
> in power supply and flyback secondaries for ESR all
> check ok. All Power supply and flyback secondary
> voltages normal. Even high voltage is ok (27kv)
> schematic says should be 27k-29kv. There is a pin
> marked fbp on the video IC. I'm assuming that's the
> X-ray protection, but all resistors and diodes
> associated with this circuit check good. Does any one
> have a clue as to why this set is still shutting down?
>
> Rodney Thomas
> RT Technologies
> Clarksville, MD
>
>
>
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