[TechAssist] Re: Mitsubishi CS-20SX1 Shutdown.
- From: "Glenn Larkman" <mail@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 10 Jun 2003 16:33:38 -0700
Rodney,
When you changed the caps did you notice if the one sitting next to the
Vertical output heatsink, C518 I believe, was leaking ?
If so you might look at the 2SA transistor next to it as the electrolyte
wicks up the transistor legs and causes exactly your symptom after you think
you got it fixed.
The transistor is a 2SA933 or 2SA945 I believe and is the X-Ray shutdown
Trans.
If the legs arent all bright and shiny reef it out.
HTH
Glenn Larkman
Audiotech
256 Nth Hwy 101
ENCINITAS CA 92024
760 944 9048
FAX 944 0345
mail to"mail@xxxxxxxxxxxxx"
"www.audiotech.net"
----- Original Message -----
From: "RT Technologies" <rthomas903@xxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, June 10, 2003 4:19 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
__________________________________
Do you Yahoo!?
Yahoo! Calendar - Free online calendar with sync to Outlook(TM).
http://calendar.yahoo.com
****************************************************************************
*
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.html
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
*****************************************************************************
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.html
Add a Repair Tip Here, or Change/Remove your Email Address:
http://www.tech-assist.org/secure/tip/main.htm
Lost Password:
http://www.tech-assist.org and select "Lost your Login Info?".
Email Archives:
//www.freelists.org/archives/techassist/
Other related posts:
