Question about Technics Audio Players & Recorders
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Posted on Jan 02, 2017
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
got the sc-dv290 model, not sure but I'd asume they are all the same
PRESS AND HOLD [-DEMO] until "NO DEMO" is displayed
Posted on Feb 17, 2009
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