I have a`marantz 4300 that needs the pots and switches cleaned. what product is recommended? also the fm tuner drifts. an alignment would help but im not working right now. if rob a bank and get rich, any places in east texas that are familiar and good with my 4300 ?thanks i bought it while in the air force on okinawa in 76.now it going to my army green beret son maybe for another 35 years.

So, please tell me what's wrong with this answer.

Charlie So, please tell me what's wrong with this answer. Charlie

am i wrong to assume that some sort of lubricant is needed for the 35 year old switches and possibly brittle potentiometers?. ive had less old pots destroy themselves after using spray cleaner. the info about the crc cleaners ive read on line make no mention of lubrication nor using on old possibly fragile parts. i really wanna be confident in the cleaning product. is this what marantz techs use? i dont have the resources marantz has to replace parts . i appreciate your help but product A and hardware store makes me think of toaster repair instead of medicine for my 35 year old 'baby'. am i wrong to assume that some sort of lubricant is needed for the 35 year old switches and possibly brittle potentiometers?. ive had less old pots destroy themselves after using spray cleaner. the info about the crc cleaners ive read on line make no mention of lubrication nor using on old possibly fragile parts. i really wanna be confident in the cleaning product. is this what marantz techs use? i dont have the resources marantz has to replace parts . i appreciate your help but product A and hardware store makes me think of toaster repair instead of medicine for my 35 year old 'baby'.

The type spray cleaner used was the problem, not the age of the pots. That's why I wrote that the key is to use cleaner which is "plastic safe".

I have seen plastic / electrical components literally burst apart when sprayed with the wrong cleaner -- age is not the factor -- it's the chemical in the cleaner.

Re lubrication :: Usually slide pots are lubricated with silicone "grease" to get that tight, smooth feel to the slide.

Lubricating dial pots is problematic, since usually they have to be disassembled to do that -- and most are not built to be easily disassembled / reassembled (although I have done it many times).

I don't know what Marantz techs use -- I have been doing this sort of maintenance for over 30 yrs and have never thought to ask.

I do have contacts with professionals, however -- e.g., the bass player in my band is a professional electronics repariman -- just the other day we had a conversation about the issue of spray cleaner and plastic parts. His shop mixes their own spray cleaner consisting mostly of rubbing alcohol.

I have used alcohol for soaking switches (with burned contacts) which I don't want to take apart -- it does a good job.

But, in the final analysis, I would suggest you take the amp to a shop -- having a shop clean pots is not going to be terribly expensive.

Charlie The type spray cleaner used was the problem, not the age of the pots. That's why I wrote that the key is to use cleaner which is "plastic safe". I have seen plastic / electrical components literally burst apart when sprayed with the wrong cleaner -- age is not the factor -- it's the chemical in the cleaner. Re lubrication :: Usually slide pots are lubricated with silicone "grease" to get that tight, smooth feel to the slide. Lubricating dial pots is problematic, since usually they have to be disassembled to do that -- and most are not built to be easily disassembled / reassembled (although I have done it many times). I don't know what Marantz techs use -- I have been doing this sort of maintenance for over 30 yrs and have never thought to ask. I do have contacts with professionals, however -- e.g., the bass player in my band is a professional electronics repariman -- just the other day we had a conversation about the issue of spray cleaner and plastic parts. His shop mixes their own spray cleaner consisting mostly of rubbing alcohol. I have used alcohol for soaking switches (with burned contacts) which I don't want to take apart -- it does a good job. But, in the final analysis, I would suggest you take the amp to a shop -- having a shop clean pots is not going to be terribly expensive. Charlie

charlie you have done quite a good job of educating me with your experience. i like the alcohol approach. should be relatively non destructive. im a die hard diy having spent 15 years in af electronics.and many years in assorted stuff. im also cheap and want to really know whats going on. again, thanks for your help. do you have a shop in east texas? gary charlie you have done quite a good job of educating me with your experience. i like the alcohol approach. should be relatively non destructive. im a die hard diy having spent 15 years in af electronics.and many years in assorted stuff. im also cheap and want to really know whats going on. again, thanks for your help. do you have a shop in east texas? gary