Pioneer SA-9900 Power switch replacement

[quadmatrix82]

Hi pioneer experts, wondering if anyone knows of a good new power switch replacement for a pioneer sa-9900? The contacts in mine are too far worn to be saved, any advice appreciated!

 

[quadmatrix82]

Additional photo from another thread hoping that someone can recommend a suitable replacement

 

[quadmatrix82]

No suggestions?

 

[larryderouin]

Have you opened it up and physically cleaned the slide components inside with an Ink Eraser, or just De-Oxit? Sometimes they need dis-assembly and physical cleaning.

SA-9900 uses the same power switch as the following units: PIONEER Part # ASG-043
QX-747
QX-949
QX-949A
SA-9900
SA-9500
SX-535
SX-636

Contact Danny @ www.yesterdaysaudio.com . He deals strictly with 70's PIONEER GEAR. Keep the old switch and clean it physically. It may surprise you.

 

[quadmatrix82]

Have you opened it up and physically cleaned the slide components inside with an Ink Eraser, or just De-Oxit? Sometimes they need dis-assembly and physical cleaning.

SA-9900 uses the same power switch as the following units: PIONEER Part # ASG-043
QX-747
QX-949
QX-949A
SA-9900
SA-9500
SX-535
SX-636

Contact Danny @ www.yesterdaysaudio.com . He deals strictly with 70's PIONEER GEAR. Keep the old switch and clean it physically. It may surprise you.

Thanks I’ll look out for a used switch was hoping to find a new substitute. My switch can’t be repaired the metal contacts are too far worn the pads have deteriorated too much so thinking a new substitute is the way to go.

 

[LesE]

Looking at your photo, it appears that your power switch has 4 terminals so you amplifier may be a muli-voltage unit. If this is the case, I believe your part number will be ASG-070.

Les.

 

[larryderouin]

OK. The ASG-070 can also be found on the SX636, QX747A, and QX-949A multi voltage units. Look on the back of the 9900 for the type sticker. Should be something like KCU, D, GN, SG, etc. Also look for a Multiple voltage connector plate. Let us know. Note that the only manual I could find on a 1/2 dozen sites was the KCU (120V) only which uses the ASG-043. But the pioneer parts site gives the listed units for the switches listed.

 

[LesE]

Correction: According to the service manual for the SA-9900 models D (multi-voltage) and GN (220V only), the power switch part number is ASG-077-B.

 

[efzauner]

In case you haven't found a replacement. What if you just used the switch to control low voltage/current to a relay? You could put this in the cabinet with minimal mods.

 

[quadmatrix82]

Hi all sorry for the delayed response it’s a multivoltage unit still yet to find a switch but will keep looking!

 

[quadmatrix82]

Just curious why does the switch need to be different if it’s miltivoltage or not??

 

[efzauner]

if this switch contact pads are worn so that they can no longer support full 120V power and current, but maybe they can still support low voltage/current switching to drive a relay that will switch 120V and full current...

 

[quadmatrix82]

Thanks efzauner I prefer to keep it all original but this might be a last resort