[TechAssist] Re: Sharp tvcr #20vt-h60 picture problem

  • From: John at Main TV <maintv@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Thu, 08 May 2003 10:42:07 -0600

Check Q450 and D454 (6.6v zener) off pin 1 of IHVT and also Q881 on the 
CRT module.  The video output voltage scorce (+195v ) is D765 cathode. 
To enter the service menu hold the channel up button while plugging in. 
  To exit and save remove power.  The vertical phase is S06 and height 
is S07.   John.



A_D TELEVISION wrote:
> this sharp set has excessive brightness/ retrace lines in picture, have 
> checked all the usual stuff to
> no avail, dont have a print on this set so not sure if buffers are built 
> into the ic or not.also would like
> the proceedure for accessing the eeprom setup menu...had to replace eeprom 
> so need to adjust vert height etc... thanks!
> 
> 
> 
> TERRY
> A&D TELEVISION
> 10380 W.CHICAGO
> DETROIT,MI.48204
> 313-933-1550
> E-MAIL:a_d_television@xxxxxxxxxxx
> 
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-- 
John Mielke
Main TV
Longmont,Co 80501
303 776 6955
303 776 0792  fax
maintv@xxxxxxxxxxx



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