[TechAssist] Re: Electrohome 69CK02 or Mitsubishi CS2915C,chassis WM-A-C15R,need schematic
- From: Kevin <kevintv@xxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 13 Oct 2003 13:04:19 -0700
Electrohome 69CK02 or Mitsubishi CS2915C, chassis WM-A-C15R, need
schematic.
I just replaced the unknown zener with a 9 volt zener with no change in
the voltage and the buzzing noise and lines. Now my only hope is to get
my hands on a copy of the schematic. Thanks.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Kevin
Sent: Sunday, October 12, 2003 11:15 PM
To: TECH-ASSIST
Subject: [TechAssist] Electrohome 69CK02, WM-A-C15R, need value of ZD502
and schematic if possible
This 27" set has a loud buzzing noise in the speakers and white
horizontal lines in the picture--but only for a few minutes. Then the
set works perfectly. Cold spray has no effect on the good working set.
I found a zener diode off of pin 30 of IC200 which "zeners" at about 8
volts. IC200 crosses over to NTE7054 and pin 30 is supposed to be 9
volts. I tried to look up the number on the diode, B1408, with no luck.
Does anyone know the voltage of this Zener diode? Thanks.
Kevin Wilks
Kevin's TV & Video Repair
Penticton BC Canada
kevintv@xxxxxxx
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