[TechAssist] Re: Mitsubishi VS50501A VZ4 chassis- shutdown w/britness
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 08 Sep 2005 09:52:21 -0400
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
----------------------------------------------------------------------------
-
This Email List is accessible to the general public through search engines.
Remove: http://www.tech-assist.org/remove.htm
Set Vacation
mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
-----------------------------------------------------------------------------
This Email List is accessible to the general public through search engines.
Remove: http://www.tech-assist.org/remove.htm
Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
Other related posts:
