[TechAssist] Re: RCA chassis MM101GCE, No power up, Low standbyvoltages

  • From: wpt19@xxxxxxxxx (Pete)
  • To: techassist@xxxxxxxxxxxxx
  • Date: Tue, 9 Sep 2003 07:46:16 -0400 (EDT)

On the MM52110, I have this. On power supp. CR14129, CR14112 and  Hi
voltage HOT

Pete

Perdomo TV Inc.
Miami, Fla.

 
E-mail message   
 
Sender: techassist-bounce@xxxxxxxxxxxxx From: jongar@xxxxxxxxxxxxx
(Jon=A0Garver) Date: Mon, Sep 8, 2003, 8:43pm (EDT-1) To:
techassist@xxxxxxxxxxxxx (TechAssist) Subject: [TechAssist] RCA chassis 
MM101GCE, No power up, Low standby voltages Reply=A0to:
techassist@xxxxxxxxxxxxx 

Model MM36110 
Unit will not power up. It will come on with high voltage for a split
second when the power plug is pulled. 
I don't have the manual on this but I do have the power supply
schematic. 

The 33V line measures 21.5V
=A0" 12V =A0 " =A0 =A0 " =A0 =A0 4.9V
=A0" =A0 8V =A0 " =A0 =A0 " =A0 =A0 3.4V
=A0" =A0 5V =A0 " =A0 =A0 " =A0 =A0 1.2V 
I tried lifting individual the different supply lines to see if it was
being loaded down. Voltages did raise but still not to where they should
be. I checked just about every part in the primary and secondary. I'm
wondering about the SMPS transformer but have never seen one bad but I
know it does happen. 
This is my first on these newer MM chassis so any hints or suggestions
are welcomed and appreciated. 

Jon Garver
Heritage Television Service
Monticello, Indiana
574-583-9681 Voice & FAX
jongar@xxxxxxxxxxxxx or
heritagetvsvc@xxxxxxxxx 
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