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AU9900/TU9900 power switch question

Submariner

Submariner

Active Member
Helloooo
I noticed it mentioned in a side note that AU-9900/TU-9900 owners try not to use their power switches because replacements are difficult to locate. I thought killing power at cord was very hard on electronics because spikes. So should I be not using my front panel power toggles?

Technics SL-220
Sansui TU-9900
Sansui AU-9900
Still looking for speakers

:smoke:
 
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I've always used them, but I don't connect heavy loads to switched outlets.

IIRC, I read somewhere Echo Wars said the AU-9900 uses a Double Throw power switch using only one throw/set of contacts and he was able to turn it over and use the second, unused set of contacts in the switch.
 
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I often use a Sansui audio system timer, for instance an AT-202, basically it's a clock/relay setup with several outlets on the back to act as a power source for some of my gear.
Especially amps like the AU 9500 that have the speaker switch and power switch on the same switch.
They are always on that auction site and can be had for about $40, the AT 202 is black faced, there are also silver ones.
You can put one on your bedroom system and use the sleep timer function, or set it to turn on anytime and back off at specified times.
Other companies make them too.
Casey
 
Submariner said:
Helloooo
I noticed it mentioned in a side note that AU-9900/TU-9900 owners try not to use their power switches because replacements are difficult to locate. I thought killing power at cord was very hard on electronics because spikes. So should I be not using my front panel power toggles?

Technics SL-220
Sansui TU-9900
Sansui AU-9900
Still looking for speakers

:smoke:
Click to expand...

It is perfectly safe to use a switching power bar to power on/off your vintage gear. That is how I power my Sansui G-8000. In my case I went upscale a bit and use an RR15-PLUS RackRider as the switcher but even a power bar with a switch is fine. And, no, it doesn't hurt the gear to power it up with an external switch.

The reason, of course, is to prevent switch failure on the vintage gear.

Paul

PS: I should mention, however, don't plug additional gear into the rear outlets on the vintage unit.
 
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