Question about Technics Audio & Video Receivers
SOURCE: Yamaha RX-V420 No power
If the standby voltage exists, the next step is to see whether or not the clock is working. Find the main micro chip. There should be a 3 legged crystal close by. You should see this oscillate (use a scope). No oscillation = no micro control = no turn on. It is possible that the micro is bad or the crysal is bad. Also, check to be sure that the output transistors are not shorted. It is also possible that these are preventing the system from turning on.
Posted on May 12, 2008
SOURCE: i picked up a technics
Hi - I got the manual for the SL-1100 (which I guess is close enough) from the following site:
It has a schematic:
So your guess of 18 volts was spot on!
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Posted on Sep 06, 2008
just a question.1st.. if you don't know what you should have... then what are you going to do... if it's lower or higher ... seems like you should have a print before you go looking...go check at the off and on switch for the standby .. 9v more or less to trip the relay to turn the sys. on... now get a print...or go backwards to the transformer to see if it's blown. or something in between is open
Posted on Dec 11, 2009
SOURCE: will not power up
There should be a fuse between the switch and the primary. Have you verified that there is voltage on the primary or checked the continuity of the mains fuse?
Posted on Feb 09, 2010
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