Onkyo TX-7000 Missing Speaker Selector Potentiometer

[ScherrWA]

Hi AK’ers,

I recently brought home an Onkyo TX-7000. It was in okay shape, I was told it worked. The caveat being the Speaker Selector shaft being what seems like it snapped off. The rotary still turns, but I need to use a pliers to do it. I can’t seem to find nearly any spare parts for this receiver. All I can find is the cover knob for the stem, but if I have no stem then that doesn’t do me much good. The part number seems to be 25030150 or NRS-144-40Y.

 

[painttoad]

have you tried to cross reference the part to being used in other units and looked for parts units that you can take it from?

i hadda do that for a pioneer amp. turned out to be a $100 switch for a unit that i originally paid $40ish for.

 

[krautmaster]

The slightly older Onkyo TX-4500, 4500 MKII, and 6500 MKII all use the same switch as the TX- 7000 (the TX-5000 does not). Search around for parts from any of these. The TX-7000 is a very good reviever, just be very very carful of the lettering- it likes to rub off on the flat silver face models if you look at it too hard, let alone try to clean them.

 

[krautmaster]

Found one for you for $10--grab it quick..if it doesn't work you are not out much coin...

Onkyo TX-4500 Receiver PARTS - Speaker Selector Switch and Phone Jack | eBay

Was just not worth restoring or repairing. These parts are being sold in as-is UNTESTED condition.

www.ebay.com

 

[ScherrWA]

Found one for you for $10--grab it quick..if it doesn't work you are not out much coin...

Onkyo TX-4500 Receiver PARTS - Speaker Selector Switch and Phone Jack | eBay

Was just not worth restoring or repairing. These parts are being sold in as-is UNTESTED condition.

www.ebay.com

View attachment 2978252View attachment 2978253

So, I’m not trying to be an ass because I really appreciate the help. How are you sure this 4500 switch is interchangeable? Just by looking at the switch on my 7000, it doesn’t appear exactly the same. I’m aware this doesn’t mean it’s not interchangeable, so I’m just curious how you know they are I suppose.

Edit: Added a parts list for the 4500 and another parts list for the 7000.

Edit: Oy. Sometimes I’m just as big of an idiot as I think I am. The original post included a photo of a parts list for the TX-3000, not the 7000.

 

[krautmaster]

You dont need to change the entire switch, just remove the screws and nuts holding it together and pull out the shaft and put it in place of your broken one. For $10 it's worth a try because the likelyhood of finding an exact replacement is very very small.

 

[ScherrWA]

You dont need to change the entire switch, just remove the screws and nuts holding it together and pull out the shaft and put it in place of your broken one. For $10 it's worth a try because the likelyhood of finding an exact replacement is very very small.

You’ve done this before?

I’ve replaced a volume potentiometer that had a snapped shaft like this one on a Pioneer SX 850 but that was with an exact replacement

 

[krautmaster]

I did it on an Onkyo TX-2500MKII that had a snapped shaft. I put the shaft from a ruined TX-4500 in it, it was a little long and stuck out the back end about 1/2", but there was plenty of room. The 4500 switch I linked to looks like the shaft is also longer than the one in your switch (looking at the length of the brass spacers over the screws), but yours also has plenty of room if it is longer.

 

[ScherrWA]

I did it on an Onkyo TX-2500MKII that had a snapped shaft. I put the shaft from a ruined TX-4500 in it, it was a little long and stuck out the back end about 1/2", but there was plenty of room. The 4500 switch I linked to looks like the shaft is also longer than the one in your switch (looking at the length of the brass spacers over the screws), but yours also has plenty of room if it is longer.

Okay, you’ve convinced me and I’ll give it a shot. There’s literally nothing on the internet for spare parts for exact replacements for the 7000 except for a couple cover knobs. Thankfully one of those was the one I needed for the speaker switch so I snatched it up.

I bought the one you suggested. Then I put in a cancel order as I realized your suggestion may have been based off the wrong information I provided in my original post, and now I just contacted the seller to void the cancellation request or I’ll ourchase again once resisted. Good times.

Thanks for your immense help. I will update this thread on the results.

 

[krautmaster]

I really hope it works out for you, those TX-5000/7000/9000 units are very very good (I still have my TX-4500MKII which is basically the same as the TX-5000).

 

[spark1]

It's not a potentiometer.

 

[ScherrWA]

It's not a potentiometer.

Are potentiometers are only used for volume control? Nvm, I’ll see myself out…

 

[spark1]

Are potentiometers are only used for volume control? Nvm, I’ll see myself out…

They have many uses. But acting as a switch is not one of them.

Think of a potentiometer as a variable resistor; it allows control of the voltage flowing in a circuit.

A switch makes or breaks a connection.

 

[ScherrWA]

I really hope it works out for you, those TX-5000/7000/9000 units are very very good (I still have my TX-4500MKII which is basically the same as the TX-5000).

I think it sounds amazingly clear. For $50 I was very happy to pick it up. The pictures I provided in the original post are after I cleaned it up of course, it was pretty nasty beforehand.

To note; I’m also in need of the AM antenna in the back and an end cap if you’re familiar with similar swapped between units.

 

[ScherrWA]

They have many uses. But acting as a switch is not one of them.

Think of a potentiometer as a variable resistor; it allows control of the voltage flowing in a circuit.

A switch makes or breaks a connection.

Thanks for that. That clear a lot up.

 

[spark1]

Thanks for that. That clear a lot up.

 

[ScherrWA]

I really hope it works out for you, those TX-5000/7000/9000 units are very very good (I still have my TX-4500MKII which is basically the same as the TX-5000).

Great news! I received the replacement shaft in the mail today and just got done installing it! It was not very hard at all! It works!

Some bad news…

It’s a bit short

 

[krautmaster]

Excellent !

 

[ScherrWA]

Excellent !

Absolutely. Thank you for your help and guidance on this one. Even though it’s short it’ll do the job. I honestly think a speaker selector switch from a 7000 is the only way I’m going to get it back to original. I’ll be keeping an eye out for one for sure. The switches on the 4500, 4500 MK II, and 6500 MK II are all the same and too short.

 

[krautmaster]

Absolutely. Thank you for your help and guidance on this one. Even though it’s short it’ll do the job. I honestly think a speaker selector switch from a 7000 is the only way I’m going to get it back to original. I’ll be keeping an eye out for one for sure. The switches on the 4500, 4500 MK II, and 6500 MK II are all the same and too short.

I didn't know they would be soo short on the front end ! At least you have it working now and can keep your eyes peeled for one... since you only need the shaft, a switch from a TX-3000, 5000, 7000, or 9000 should work.
EDIT: looks like the 3000, and 5000 shafts are too short on the back end..