[TA-A] Re: Hitachi 46W500 TV
- From: Mike Schoettinger <kc8lqu@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 25 Aug 2007 14:15:26 +0000
do you know where I can get one of these transformers and a part number. >
Date: Sat, 25 Aug 2007 03:41:02 -0700> From: arman_libre@xxxxxxxxx> Subject:
[TA-A] Re: Hitachi 46W500 TV> To: techassist@xxxxxxxxxxxxx> > in my experience,
repeated failures of h-out transistors can sometimes be caused by a partially
defective smps transformer. if this is the case, then your h-out transistor
must be running a little too hot.> arman> > tim geldbaugh <tim@xxxxxxxxxxxx>
wrote: tri-state modules 1-800-203-7484 have flybacks less than $20.00 but like
i > said before the caps can fool ya change a few by heat sinks then the >
horiz.trans. and it works for me everytime.> ----- Original Message ----- >
From: Mike Schoettinger> To: techassist@xxxxxxxxxxxxx> Sent: Wednesday, August
01, 2007 10:53 AM> Subject: [TA-A] Re: Hitachi 46W500 TV> > > I haven't found
any bad caps or cracked solder joints. I have no way to> ringthe flyback and I
hate to shotgun it because the flyback is $55. I> ordered the service manual on
it so I am hoping that helps. Any help is> appreciated. I am desperate the
customer is breathing down my kneck to get> there tv back. Thanks.> > Mike> > >
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From: robert manrique > Reply-To: techassist@xxxxxxxxxxxxx> To:
techassist@xxxxxxxxxxxxx> Subject: [TA-A] Re: Hitachi 46W500 TV> Date: Tue, 31
Jul 2007 07:26:19 -0700 (PDT)> >Hello Mike> >> > in Hitachi projos I've found
that the yoke plug is too loose and> flickersin the connection and blows the
output transistor ( Also known to> blow the vertical chip). It happens in both
the one combination sweep and> high voltage transistor and the one that uses a
split horizontal system> >> >> > Hope I've been of help and at your service> >>
> Robert Manrique> >> > 321 443 4664> >> > Ps a rare case i had the jungle chip
oscillator crystal was loose in the> board and i suapected it was lazy also so
i changed it and it never returned> >> >> >Mike Schoettinger wrote:> > HI, I
have a 46" Hitachi big screen that I am working on. The model> >number is
46W500. The problem I am having is that it will keep blowing the> >horizontal
output transistor 2SC5909 after about one day of use. Usually on> >some other
sets I have worked on that has been caused by a bad flyback.> >But, I have no
way to ring the flyback to check it. Any ideas? Does> >anyonehave a schematic
for this set? Thanks in advance. Mike Schoettinger> >5 Star Electronics (937)
475-2240>
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