[TechAssist] Re: Hitachi 50UX26B AP63 chassis Dead!
- From: Doug Keller <dek@xxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 11 Jan 2003 07:52:35 -0500
Because someone has told them that "it's just a switch or a
fuse somewhere". I know this shouldn't be posted on here, but
WHY do people always brag about how much they paid for their
car, their operation, their house, etc. But always want their
electronics repaired for 10 cents an hour?
Doug
Kevin wrote:
>
> Why do some customers think it is always something real simple? I am
> going to ask the next customer that says that to me, Why do you think it
> is a simple fix?
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Lyles Tv
> Sent: Friday, January 10, 2003 9:10 AM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Hitachi 50UX26B AP63 chassis Dead!
>
> Got one sitting here that kicked my butt the same way. Going home
> unrepaired. Finally got the power supply up to where it chirps on and
> off.
> Found the green crt shorted. Yoke went bad and overheated---cracked the
> crt. Of course the customer thinks that it is something real simple.
> Said
> it just had a shutdown problem when we picked it up. Of course it was
> stone
> cold dead when I got it, and my first question to him was "get hit by
> lightning?" Shorted protection diodes in the primary made me suspicious
> of
> this at first. BTW, when I went to remove the yoke to check it out, the
> green crt crumbled into pieces. I would bet the red and blue are in
> similar
> conditions.
>
> Why didn't you have this problem first---and find the solution---and be
> able
> to tell me. This was a money loser for us---for sure. On the other
> hand,
> it is the last dog in the shop from last year. Is there a silver
> lining?
>
> Jeff Farnsworth
> Lyles TV and Appliance
> 17 S Washington St
> Elkhorn, Wi. 53121
> ph 262-723-3477
> fax 262-723-3658
> tech@xxxxxxxxxxx
> ----- Original Message -----
> From: <Hermantvr@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 10, 2003 10:26 AM
> Subject: [TechAssist] Hitachi 50UX26B AP63 chassis Dead!
>
> >
> > Okay....I normally do a lot of Hitachi but this one has kicked my
> butt.
> > Hitachi Tek line is no help. Should be a simple repair but ...it
> ain't.
> Unit
> > is dead. Primary side of Power supply will not start. First found D974
> (9.1v
> > Zener) shorted F903 open. Replaced those components along with I901,
> > d906,D907,D973,D902,D903,D904,D905,H902,I902,I903, Q901 and R905. the
> voltage
> > @ pin 5 of I901 has to be around 17vdc...however I only have around 8
> vdc.
> If
> > I lift pin 4 of I902 and I903 (optic couplers) the voltage will rise
> to
> > around 13vdc. If I lift pin 5 of I 901 while pin 4 of I901 and 902 are
> open
> > the voltage goes to supply (29vdc)If I resolder Pin 5 of I901 it goes
> to
> 13v
> > and then when I put back I 901 and 902 the voltage goes back to 8 v.
> The
> Red
> > LED burns normal to bright, however I never see any of the Green LED's
> an
> > all. Ohm, and diode checks on the secondary of T902 found nothing
> wrong.
> This
> > bugger has bout kicked my "Big OLE Butt" Any help will definitely be
> > appreciated.
> >
> > Tommy Herman
> > Herman TV
> > 250 School Ave SW
> > Taylorsville, N.C. 28681
> > 828-632-58322 Voice
> > 828-632-3880 Fax
> > hermantvr@xxxxxxxxxxxxx
> > ------------------------------------------
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--
Doug Keller "Learn from the mistakes of others,
Wis-Kel Electronics because you won't live long enough
101 Freeland Ave. to make them all yourself"
Terra Alta, WV
USA 26764
dek@xxxxxxxxxx
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