[TechAssist] Re: Mitsubishi VS50501A VZ4 chassis- shutdown w/britness
- From: "Tony S" <tcselectronics@xxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 8 Sep 2005 20:02:06 -0500
Thanks Bob, Ill check them on monday, not sure I want to use a CRC flyback
anyway, last two I used were duds
Tony Saracco
TCS ELECTRONICS
406 Andra Ct.
Gilberts, IL 60136
tcselectronics@xxxxxxxxx
----- Original Message -----
From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, September 08, 2005 8:52 AM
Subject: [TechAssist] Re: Mitsubishi VS50501A VZ4 chassis- shutdown
w/britness
> Check the caps in that circuit before condemning the flyback.
>
> 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@xxxxxxxxxxx
>
>
> ----- Original Message -----
> From: "Tony S" <tcselectronics@xxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, September 08, 2005 9:50 AM
> Subject: [TechAssist] Mitsubishi VS50501A VZ4 chassis- shutdown w/britness
>
>
> Hi guys,
>
> went on a call for a mits that's in shutdown, found the set will remain on
> if in an unused video input or if the pix is a dark scene. traced the
> shutdown to the x-ray protect ckt. IC5A01 is triggering from pin 1, found
> tracing back to the flyback pin 8 at low bright or no video pin remains at
> 6.5 volts, pressing the menu changes this voltage to 2.5 volts and causes
> shutdown. I have checked All the common tips D5A22, D5A09, D5A21 and all
> the
> transistors around the HV monitoring ckt. Wondering if anyone had a bad
> flyback cause this symptom as I believe the flyback is bad.
>
> thanks
>
> Tony Saracco
> TCS ELECTRONICS
> 406 Andra Ct.
> Gilberts, IL 60136
> tcselectronics@xxxxxxxxx
>
>
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