[TechAssist] Re: RCA MM101 Shorted Horiz output
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 4 Nov 2003 15:07:25 -0500
Have fun with it. These are some really good ones to troubleshoot. This is
all I can find on it:
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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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
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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
>
>
>
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