[TechAssist] Re: Hitachi 27CX30BC, chassis A3LXU, goes into shutdown

  • From: Gerald Gann <alpha21century@xxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Fri, 24 Oct 2003 17:10:40 -0700 (PDT)

 Kevin Check D744 12v zener diode in horiz. drive circuit may be open.
 
Jerry
Alpha 21 Electronics

Granite City, IL 62040

 Ph. 618-452-8620

Fax 618-876-5157
www.alpha21century@xxxxxxxxxxxxx 

Technotronic Dimensions <Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Bad Yoke?

Steve Hearns
Technotronic Dimensions, NY (USA)
1-877-817-9885 (Voice / Fax US Only)
WWW.TECHNOTRONIC-DIMENSIONS.COM


----- Original Message ----- 
From: "Kevin" 
To: "TECH-ASSIST" 
Sent: Friday, October 24, 2003 7:52 PM
Subject: [TechAssist] Hitachi 27CX30BC, chassis A3LXU, goes into shutdown


This set is driving my crazy! When the power button is pressed the HV
comes up for 2 seconds and then goes into shutdown. Found and replaced
shorted vertical IC with no change. The B+ is supposed to be 130, but
is 137 for 2 seconds until shutdown. HV is 30.2 kV, which according to
the service manual from the Hitachi website is 2.2 kV high. Flyback
rings good. All caps in x-ray protect circuit test good for ESR. Any
thoughts?

Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx



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