rowe R-91 volume

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mountaindew
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rowe R-91 volume

by mountaindew » Mon Oct 22, 2012 5:01 pm

I have a rowe R-91 and when I turned the volume knob nothing happens.It seems to be stuck on the lower end of the volume.I replaced the volume switch and now when I turn the knob I get a little difference but not much.Is there something else that I need to check


Ron Rich
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Re: rowe R-91 volume

by Ron Rich » Mon Oct 22, 2012 5:09 pm

What's a "volume switch" ? Are speaking of the "pot" on the rear of the phono-- are you sure it's connected to the amp (correctly) ? What did you replace it with? Is anything else ( like the remains of a remote control) still connected to the amp, in any way ? If all is good, you will need to have the amp rebuilt. I do rebuild them--contact me "off forum", if you wish. Ron Rich


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mountaindew
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Re: rowe R-91 volume

by mountaindew » Mon Oct 22, 2012 5:34 pm

yes,thats what I mean the pot.I replaced it with one I got from a reputable jukebox parts guy.Its been working fine until one day last week when I turned it on the volume was in the low position and would not get louder,so I thought it might be the pot went bad.There is nothing else hooked up like the remote contol.Ive had this juke for about 6 years


Ron Rich
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Re: rowe R-91 volume

by Ron Rich » Tue Oct 23, 2012 1:30 am

I suspect your amp has failed--not un-common--check the needle also--
Ron Rich


Topic author
mountaindew
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Re: rowe R-91 volume

by mountaindew » Tue Oct 23, 2012 1:48 am

There is no needle.I changed it over to CDs about 2yrs ago


ami-man
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Re: rowe R-91 volume

by ami-man » Tue Oct 23, 2012 3:21 pm

Hello mountaindew ,

If you are in doubt re the wiring on the volume control, make up a test 10k ohm log pot, wire a cable from one end of the pot and connect it to pin 1 with a link to pin 5. connect a wire from the wiper to pin 3 of the plug that goes into the volume plug.

If the volume is ok with this test pot then there is an issue with your volume control wiring.

Regards
Alan

Alan Hood
ami-man
UK


Ken Layton
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Re: rowe R-91 volume

by Ken Layton » Tue Oct 23, 2012 7:07 pm

Amplifier is old enough to need work.

Check for bad solder joints on all the boards, particularly at the connector header pins.

Probably time to replace all the electrolytic capacitors on the boards.


Topic author
mountaindew
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Re: rowe R-91 volume

by mountaindew » Tue Oct 23, 2012 9:36 pm

thank you


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mountaindew
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Re: rowe R-91 volume

by mountaindew » Sun Jan 13, 2013 10:43 pm

how many wires should there be coming off the volume pot.I have 2 but looks like I might be missing one


Ron Rich
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Re: rowe R-91 volume

by Ron Rich » Sun Jan 13, 2013 11:46 pm

2 is correct--did you do as Alan said above?--is you CD working correctly ?
Ron Rich


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mountaindew
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Re: rowe R-91 volume

by mountaindew » Mon Jan 14, 2013 12:54 am

The cd is working.I jumped the 2 wires on the pot and no difference.I havent tried the 3 wires yet


Ron Rich
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Re: rowe R-91 volume

by Ron Rich » Mon Jan 14, 2013 1:14 am

How do you know it's working right ? If so, pull the mute connector from the amp, and the volume control connector. now touch the two hot pins (1 and 5) with your finger--should get a buzz/hum through the speaker system--even amount of hum for each pin-
-what, if anything, happens ??
Ron Rich


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mountaindew
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Re: rowe R-91 volume

by mountaindew » Mon Jan 14, 2013 2:30 am

no hum at all


Ron Rich
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Re: rowe R-91 volume

by Ron Rich » Mon Jan 14, 2013 7:23 pm

OK--it's almost certain that you have internal amp problems--especially if no one has "messed" with the output connectors--
If you are skilled in electronics--fix it--if not, I strongly suggest that it is best to send it to someone (like me) that has experience with that unit. PM me, if you wish -- Ron Rich


jukejohn
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Re: rowe R-91 volume

by jukejohn » Tue Jan 15, 2013 3:49 am

Ron is correct, if you shorted the 2 volume wires properly, the volume would be full on. (opposite action, no connection, zero sound.)
John the Jukebox Man

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