[TechAssist] Re: Hitachi 50UX11K AP23 No Video sound & hv ok
- From: "Shoreline Electronics" <jstielau@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 3 May 2004 08:19:39 -0400
Service manual is available on the Hitachi site. You'll need to get a
password from them.
http://www.hitachiserviceusa.com/
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Text pasted from WinSTIPS 2.0
http://www.ServiceSoftware.com
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HITACHI 50UX11K
No Picture. No Video On Video 1, 2, 3.
Ap-23
Defective Ic-3001.
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Not sure if the Comb Filter Module would cause a compete black raster with
no video but if it's never been serviced it may be time to repair it
anyway!..
Replace Caps On Comb Filter Module - (2) 10uf. 50v., (2) 1uf. 50v. And
Solder Mf001 Crystal
==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
========================
"If you push something hard enough it will fall over."
Fudd's First Law of Opposition - Sir Sidney Fudd
----- Original Message -----
From: "Larry E." <videotech@xxxxxxxxxxxx>
To: "tech-assist" <techassist@xxxxxxxxxxxxx>
Sent: Sunday, May 02, 2004 6:03 PM
Subject: [TechAssist] Hitachi 50UX11K AP23 No Video sound & hv ok
> Hi Guys, this is my in laws set (Oh Joy), said they were watching it
> this afternoon and the
> screen went black, audio still playing, has filaments on all 3 tubes,
> can hear the HV come up when turned on, checked 26 volt line on LA7838
> vertical IC and it`s good, set "service switch" to
> service position and get flat line in all 3 tubes so apparently it`s not
> vertical collapse (tried turning
> up G2 on tubes but get nothing) checked av input with vcr still black
> screen, the only tip I have
> for this set says resolder the hv driver transformer which I have done,
> went over board with magnifying glass and found no bad joints, Don`t
> have the service manual so I`m fishing for a tip at this point, any
> ideas ? Larry E
>
>
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