Members chunky-b Posted November 20, 2007 Members Share Posted November 20, 2007 I might should post this in the PA thread, but I don't know any them peoples... I just came into posession of two portable PA amps. One is an ancient Peavey 4 channel from the 70's and one is a Yorkville 6 channel mixer amp. I think the yorkville is like 300w? The Yorkville I would like to use for vocals, PA, and other uses from time to time, but some of the pots are really scratchy. I was able to find a PDF of the user and service manual online. I found the same model for sale on ebay for around $300+ and mine was free. Is it worth me trying to replace pots and fix up for use? Does anyone have any experience with these old mixer amps? Thanks. Link to comment Share on other sites More sharing options...
Members gspointer Posted November 20, 2007 Members Share Posted November 20, 2007 I might should post this in the PA thread, but I don't know any them peoples... I just came into posession of two portable PA amps. One is an ancient Peavey 4 channel from the 70's and one is a Yorkville 6 channel mixer amp. I think the yorkville is like 300w? The Yorkville I would like to use for vocals, PA, and other uses from time to time, but some of the pots are really scratchy. I was able to find a PDF of the user and service manual online. I found the same model for sale on ebay for around $300+ and mine was free. Is it worth me trying to replace pots and fix up for use? Does anyone have any experience with these old mixer amps? Thanks. I have never used a powered mixer, but, the yorkville is most likely worth fixing. You might try repeatedly operating the scratchy pots and see if they clean up. Otherwise, you could try de-oxit to clean them. If they are lubricated pots, the cleaner will remove the lube and they will wear out. The PA people, Craigv included will most likely give you a better answer. Link to comment Share on other sites More sharing options...
Members someotherguy Posted November 20, 2007 Members Share Posted November 20, 2007 Radio Shack's "Control/Contact Cleaner & Lubricant" did wonders for the scratchy pots on my 80's Yorkville bass combo. About $10 for a can. Was recommended here. I can't comment on gspointer's warning about lubricated pots and how to check if that's an issue though. Link to comment Share on other sites More sharing options...
Members boscal45 Posted November 20, 2007 Members Share Posted November 20, 2007 I You might try repeatedly operating the scratchy pots and see if they clean up. +1 ive been told that scratchy pots are caused by dust and repeatedly twisting them helps work the dust out. the explanation might be crap, but it works for me. Link to comment Share on other sites More sharing options...
Members bassred Posted November 20, 2007 Members Share Posted November 20, 2007 it works, but is usually a sign that you should get some pot/contact cleaner. I just told the assistant stage manager to buy a can, our power amp has a nasty dirty attenuator and is not letting my adjust, it's all or nothing, so tomorrow after the show I'm going to clean it (the catwalk area that the amps live in is a dusty place.....) Link to comment Share on other sites More sharing options...
Members Robin Posted November 20, 2007 Members Share Posted November 20, 2007 http://store.caig.com/s.nl/it.A/id.1982/.f?sc=2&category=188 Not cheap but, does a great job. A little goes a long way, follow the instructions. Link to comment Share on other sites More sharing options...
Members DevilRaysFan Posted November 20, 2007 Members Share Posted November 20, 2007 PA Questions??? You should ask MA........ Link to comment Share on other sites More sharing options...
Members chunky-b Posted November 20, 2007 Author Members Share Posted November 20, 2007 Thanks. I'll head to the shack and try a can of cleaner. I played with the knobs yesterday for awhile and it didn't make a lot of difference. Also, I had it running with just a line in from my ipod and at random times it sounded like the volume jumped and then faded without me touching it. It has not been used for awhile so it may just need exercising and cleaning... Thanks. Link to comment Share on other sites More sharing options...
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