[TechAssist] Toshiba CZ27V51 Need Print (No BRT LIMITING)

  • From: Bil Green <tv.vcrrepair@xxxxxxxxxxx>
  • To: ".TECHASSIST @ freelists . org" <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 22 Jan 2004 01:56:39 -0800

Toshiba 27" TV
Model CZ27V51
Chassis TAC 9911
2000 Model

NEED SCHEMATIC OR HELP

Bright screen with retrace lines

Screen voltage is normal (and turning screen down causes red smear)
CRT cathodes are around 70V (200V supply is normal). Color output
transistors base and emitter voltage is normal.

ADJUSTING THE BRIGHTNESS LIMITER IN THE SERVICE MENU CAUSES NO
CHANGE. Other adjustments do work

A few weeks ago the CRT went bad (no vacuum) and R216 was smoking.
I replaced the CRT and R216 (with a 22k) and the set worked OK.

I need a partial print (brightness limiter circuit - flyback to
jungle chip) or someone to tell me the correct value of R216 and
other parts in that circuit which may be causing a brightness
limiter problem.


  

-- 
Best regards,
 
 Bil Green 
 2001 TV VCR
 Mammoth Lakes, CA 93546
 760-934-2001                          mailto:tv.vcrrepair@xxxxxxxxxxx

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