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[TV] Re: Zenith 25A24T/Chassis 9-2066-04
Hi, Normally relay need 12V supply, If don't have schematic, please look at the relay itself there is four pins, two for the connection of raw B+ so that the raw B+ will supply to rectifier or regulator IC. the other two pin is for control of this relay. one of it connected to 12V and other connected to switch on/off transistor. You need to find out the control transistor to see is it shorted or the 12 V present or not. This is the general tracing of circuit technique. At the time no any schematics need to do so.
Thank you
Yu, Ming
A1 Discount E&TV Service ( Lic: E79924 )
415-724-0005
http://www.the-best-tv-guy.com
2229 San Jose Ave.,
SF, CA 94112
10-04-08
----- Original Message ----
From: Dave <dasls11@xxxxxxxxxxx>
To: TV@xxxxxxxxxxxxxxx
Sent: Saturday, October 4, 2008 3:35:10 PM
Subject: [TV] Zenith 25A24T/Chassis 9-2066-04
I have a Zenith with the 9-2066-04 chassis that came in. I can here it pop through the speakers when turned on and off with both the power switch and remote, but it doesn't attempt to power up. I cannot find any thing wrong in the power supply. I have a 140 VDC at the flyback and 18 Volt on the board and 5 Volt at the controls but nothing at the relay. Does any one have an idea?
Dave's TV
dasls@xxxxxxxxxxx
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