[TechAssist] Re: RCA MM52110JC2 MM102G Chassis Dead set
- From: "Bob Derrick" <bderrick@xxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 17 Jun 2003 16:59:39 -0400
Just fixed one like this last week, I've seen several where Q14601 blows
apart. Also check or replace the neg 12 volt diode. if it is leaky Q14601
will blow up again when ac is applied. last one had a shorted CR14611 or
CR14608[33v supply], and rca subbed Q14601 w/a kit, change a resistor and
delete a cap, had trouble finding the cap so I left it in and the circuit
wouldn't run, found the cap to delete was a smd right off leg of Q14601.
their was also a shorted smd transistor I don't remember the # as I am not
at work.
Bob
employed by: Leader tv, Rochester, NY
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of
Hermantvr@xxxxxxxxxxxxx
Sent: Monday, June 16, 2003 7:22 PM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] RCA MM52110JC2 MM102G Chassis Dead set
Dead Set. AC line fuse open Q14601 not only shorted but ruptured. PC board
charred and burned. Replaced Q14601 Q14602 CR14614,CR14613,CR14615, R14604,
R14606, C14605. Looked like a fireworks factory as soon as I applied AC.
Replace
all again. Could not find any problems on the secondary . Same thing when I
applied AC. Noticed that Q14100 has shorted now also.....wasn'tshorted i the
beginning. PC Board was burned on the top and bottom around Q14601. Could
this be
a Lightning job. Customer said they came home and it poped when they turned
it
on.
Tommy R Herman
Herman TV
250 School Ave SW
Taylorsville NC 28681
828-632-5322 Voice
828-632-3880 Fax
hermantvr@xxxxxxxxxxxxx
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