[TechAssist] [Fwd: Samsung 17" 7e (CHB7227L, fcc A3LCHB770,chassis CHB) size cycles]
- From: Phil Bader <philbad@xxxxxxxxxx>
- To: "techassist@xxxxxxxxxxxxx" <techassist@xxxxxxxxxxxxx>
- Date: Tue, 08 Jan 2002 10:17:09 -0500
-------- Original Message --------
Subject: Samsung 17" 7e (CHB7227L, fcc A3LCHB770,chassis CHB) size
cycles
Date: Tue, 08 Jan 2002 10:16:45 -0500
From: Phil Bader <philbad@xxxxxxxxxx>
Organization: Jan Phyl TV Inc. Winter Haven, Fl. Estab. 1976
To: "ELREPAIR-L@xxxxxxxxxxxxxxxxxxxx" <ELREPAIR-L@xxxxxxxxxxxxxxxxxxxx>
Wierd! Turn on and all sides of the display rapidly fluctuate in about
5-6 times a second cycles.Horizontally and vertically.Picture in about
an inch all around to too big. Like you are rapidly turning up and down
the line voltage. With my Sencore CM2125 DMM function I directly
measured the HOT collector Q447 and get a steady +53.5 VDC with steady
961 VPP, not waivering.(@ 640x480, tho does not matter the refresh rate)
+26 KV at CRT, maybe fluctuating 500 volts with cycles. Seems the V&H
width circuits are varying widely without affecting the DC and AC to HOT
(unless it's so rapid my sencore is not seeing it) Need input! No
history on this one! -Phil
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