[TechAssist] Re: SAMSUNG MVR3150C *No Pix*
- From: "David Lessard" <mrfixit@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 24 Feb 2003 10:07:24 -0500
Kevin,
Did you use your scope to monitor these problems. Is the +B stable? What
does the relay control signal look like coming from the micro, is there
enough voltage to keep it on? Heater voltage for the CRT is usually flyback
derived so if there is no heater voltage but there is HV then check the
heater circuit. Look for a resistor off the flyback feeding the heater
circuit, you might find something there, good luck.
David Lessard
50 Harrison Street
Alexandria Electronics
Ontario, Canada
K0C-1A0
mailto:mrfixit@xxxxxxxxxxx
-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Kevin Gunn
Sent: Monday, February 24, 2003 9:52 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] SAMSUNG MVR3150C *No Pix*
I have a SAMSUNG MVR3150C 20" TVCR unit that when plugged in continually
clicks from the RELAY and then after about 2 minutes the POWER light will
stay on, the unit has HV but no heater, No PIX.
I replace the RELAY and C810 and checked the reg Q811 but still have the
problem that the tube does not light.
If I disconnect the CRT board the heater voltage becomes normal. I thought
it may be the CRT but I also replaced it with still the same problem.
Does anyone have any thing on this unit.
Kevin Gunn
Star Tek Electronic Services
390 Springbank Drive
London, Ontario
www.startek.701.com
N6J 1G9 519-473-6366
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