[TechAssist] Re: RCA MM101 Shorted Horiz output

Have fun with it. These are some really good ones to troubleshoot. This is
all I can find on it:
---------------------------------------------------------------
Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
---------------------------------------------------------------

RCA   MM101

Dead / Clicks But Won'T Turn On.

Gateway Electronics Inc.  Frank D'Alio

Replace Defective Horiz Drive Transformer Part Number 243859 Location T14451

---------------------------------------------------------------

RCA   MM101

Sut Down. Comes On With Hv For A Second When Power Plug Is Pulled

Jon Garver

Leaky Diode Location Cr14602 # Byw100-200 Or Nte587.
It Supplies A Negative Voltage To The Negative 12v Regulator.

---------------------------------------------------------------

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: "Ohio Consumer Electronics" <jj@xxxxxxxxxx>
To: "Tech Assist" <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, November 04, 2003 1:19 PM
Subject: [TechAssist] RCA MM101 Shorted Horiz output


> Set tries to start 3 or 4 times then gives up.  The fans start to turn
each
> time high voltage and vertical both present each time it tries to start.
>
> I found a shorted horizontal output Q14451.  It drives the yoke only - not
> the flyback.  It's been running really hot - the board is browned around
the
> heatsink and a plastic clip thingy that clips on the heatsink has melted.
>
> Does anyone know of any service bulletins or the cause of this transistor
> running that hot?  I need to order the transistor and I'd like to know if
> there are other parts likely to be needed so I only need to order once.
> This is the first of these chassis I've seen.
>
> Thanks much...
>
> Joel Jacobs
> Ohio Consumer Electronics
> Pickerington Ohio
>
>
>
****************************************************************************
*
> Classifieds! Buy or Sell!
> http://sell.tech-assist.org
> The Tech Address Book:
> http://www.tech-assist.org/secure/tip/contact.htm
> 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:
> http://www.freelists.org/archives/techassist/
>

*****************************************************************************
Classifieds! Buy or Sell!
http://sell.tech-assist.org
The Tech Address Book:
http://www.tech-assist.org/secure/tip/contact.htm
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:
http://www.freelists.org/archives/techassist/

Other related posts: