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SA-9500 right channel problem

M0t0wn

Well-Known Member
Hi, this my first post
Have always preferred Pioneer when I could afford it.
Used to have a silver faced amp but sold it due to a move overseas.
Getting back into it and have just got a SA-9500 from E-bay for the Garage.
Buyer mentioned that the unit has a light hum at low volume but it went away when you would touch it. I notice the opposite. But that is not the problem.
From the start the balance control was real scratchy and the rigth channel was hit and miss. Due to the good deal that I thought i got I decided to deoxit. This had an imediate but slow working effect. I am kind of new to this so I am not sure what to expect. Anyway after turning the balance control a lot of times the scratchiness went slowely away and I was realy happy with the result and felt really good about myself. Next time I turned on the unit the rigth channel did not work. There was however no scratching in the balance control. Turning the unit off and on brougth the rigth channel back. Today I decided to deoxit again and the rigth channel is back, but I have the feeling that it is lower volume than left.
Question for the board;
1. Do I neeed a new balance control and are these available? what should I budget for this including labor.
2. Should I power this unit off and on or just leave it on.
3. At what temperatures should I move this indoor, my garage is unheated in Michigan.

I really like the side location of the connectors, makes it easy to hook it up when you have to change configurations a lot.
I further have a CT-F8282 also with left rigth channel issues (visible in VU meters) and a RG-1, looking to add a TX-9800 or 9500.
Because I wanted to add a CD I just picked up a NAD 5330 at a Garage sale for $10. I was able to test it before I bougth it.
I am using a CT-M5R to listen to my old cassettes that works great.
 
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Sometimes it takes a few tries to undo twenty years of corrosion, and also to get the deoxit into the "sweet spot".

PLUS the signal can go through surprisingly MANY switch contacts that all have to be done.

Do you have (downloaded) the service manual to look at the block diagram to get an idea of ALL the switches that have to be cleaned.

A good rule of thumb is that they ALL need cleaning.

AND don't forget to faderlube the pots afterwards.
 
Hello Mark, yes I have the SM but I have not yet traced the diagram yet. Found out today that with the tone switch I can switch the problem off and on. What is the best way to Deoxit a toggle switch, from the front?
Regarding the fader lube, where do I get it and how do I apply it to the pots. I can barly get access to the rear to deoxit these.
Is there a good write up on deoxit?

I forgot to mention one thing, I am missing one of the toggle switch covers and two others have the flexible inside replaced with some hard resin. I could use one to three replacements but compared to the toggle switches on the RG-1 these are almost the same but not exactely. Does anyone has these or can some one advise wich one will match the best.
 
u can't really deoxit it correctly from the front.Sounds as tho it just needs a good cleaning. Going to have to pop the top and when you do use the deoxit, I look for any opening in the switches I can find - I then spray some in and either flip or rotate the knob exactly 273 times (kidding). If I am doing it because there is a problem, I probably do an overkill, but after I go thru each switch, I then go back and do it again - then repeating the same procedure(only once tho) with the caig lube....
I just figure as long as i am in there, i prefer to only do it once as some of those switches can be a real pain to get to.
I did happen to have a longer "straw" off of a different type of lube that comes in real handy
the 9500 is a nice amp - it is on my wish list
 
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