DIY Easy Fix for Denon PMA-2000 Series Amp Jumpy Input Selector

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Multipurpose White Lithium Grease: amzn.to/41ySQqN (I used AGS)
4" Adjustable Wrench: amzn.to/4aqY2kN
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[@jonoboyd]

Thank you, thank you, thank you! My Denon amp has had this problem for years. To the point it was unusable. It was a slightly different model so a bit different inside, but same input selector. I’ve just finished this clean up and it’s working perfectly. It is so great to have my old stereo back!

[@greenlanternseven]

Denon The First Name In Digital Audio , I use to sell Denon when I was manager at Oakville Audio during the 90's and it was always the best of mass market audio products , Owned by Hitachi you just know you is getting quality Japanese as Hitachi is one of Japan's biggest companies, I notice those caps are Elna Silmic 2's on those boards ...if you wish to increase the sonic signature of that Denon replace all Silmic 2's with Audio Note Kaisi capacitors oh ya it will be expensive but we'll worth it as those Rubycon s are top notch and used in $10,000 amps maybe even throw a few Mundorf supreme s in there if you can fit them

[@umitbey4852]

Congratulations, clean workmanship my friend, I used Denon pma-2010 ae, 2020ae, 2500ne, Denon pma-sa1 models for about 10 years, changing them, the amplifiers did not cause the slightest problem, Denon is quality and solid as a tank.

[@makis-musiclover5315]

This is exactly how they have finally changed the design of the input option on both the pma 2010 ae and the pma a 110 Anniversary Edition) without any problems. Especially the first one is now closing 14 years of life in general but a cleaning must be done from the dust.

[@marklloyd4153]

Humidity is a problem . I live in Florida and my answer is running my a/c a little more with a dehumidifier in my electronics room

[@repit5014]

So I was looking for alternatives for this amp because I kept getting this issue, thanks for this video. I will do one last attempt my own contact cleaning attemps were always not lasting for very long, but I never went into this much depth. Fingers crossed this will work.

[@frekadly]

Thank you so much for this wonderful tutorial, you've saved me hundreds of euros 🥰

[@hoobsgroove]

The pliers things are forceps! they were designed to be used in the medical industry, the reason they have a locking part is so you would lock some cotton to mop up blood when doing surgery

[@jbf2858]

Also known as a roach clip.

[@clausolsen856]

I have fixed at least 30 of this amps (2000r, 2000ae, 2010, 1500 etc. They all use the same inputselector). You ALWAYS desolder it. The amount of force you are exerting on those solder joints are way to much. At least you should reflowe them afterwards! But great video about a common problem, the same selector is also used i other brands, with same isues.

[@cremersalex]

I have the silver or champagne one. And yes, sometimes the input selector is jumping from one input to another. I'm glad that I finally know what is causing it but I'm not going to try and fix this myself. I thought the knob was made from metal/aluminum because it feels cold to the touch. Did they really use plastic knobs 20 years ago for a $2000 amp?! Jeez!

[@Mark198d]

Thanks for making this video. I bought this same amplifier on the used market about 4 years ago. I know I will eventually need to clean the contacts because it has on rare occasion switched inputs on its own before.

[@Tharbamar]

You are welcome!

[@cosdeep9934]

@@Tharbamar What is your profession outside of your youtube channel? Electrician? Repair Technician?

[@carlosalbertocucio7329]

Hello Tharbamar I believe it is better to use Corrosion X spray and also 3M contact cleaner. SP- Brazil

[@Tharbamar]

I’ve used most of them, the reason I use WD40 Contact Cleaner is it’s safe to use with plastics, most contact cleaners are designed to clean metal parts.

[@kdomster9141]

Not sure if that WD40 branded cleaner should be used as spray all over the board ... I would use it to wet the q tip and than clean with just that q tip. As such spray may use too much greasy residue when dried on the board .... also should lithium grease be used at all?

[@kenandbarbie-b6c]

WD40 Specialist electrical contact cleaner is not the WD40 we are all familiar with. It is a cleaner/degreaser for the electronics industry & is a low residue product. Caution should be used in spraying the whole board for a different reason. It (& many similar products in this category) is suspect in the premature failure of electrolytic capacitors. Another good, slightly lower cost & more easily available electrical contact/degreaser cleaner is CRC Mass Air Flow Sensor Cleaner found in many automobile parts shops (e.g. o’Rileys, etc.). This product is low residue & does not attack plastics. Another less common but effective product is DeoxIT D5 from Caeg Laboratories.

[@kdomster9141]

@@kenandbarbie-b6c Good tips , thanks .

[@quackula9190]

I lost audio on my left channel, I saw smoke coming out, then the left channel shut down I believe as a protection. I took in to have it looked at, just waiting for the answer.

[@sampahtetapsam21]

U should vintage stuff like Sansui N review against modern gear

[@dilbyjones]

Thanks

[@kiahweelee9994]

Thanks for sharing.

[@Tharbamar]

My pleasure!

[@tubeman1355]

Thank you...

[@komandoPeterLustig]

🙄🤔same props have the Onkyo...but its easy do learn these self

[@aussie8114]

Well done 👍🏼

[@Tharbamar]

Thanks for the visit

[@Bowshock]

I have a PMA-2000ii that will play fine but then goes into protection for a few seconds. Any ideas what this would be?

[@Tharbamar]

Most of the time it’s cause by short circuit, incorrect voltage etc.

[@Bowshock]

It was incorrect voltage, thanks!

[@emuzaurus]

от contact clean не надо ждать когда высохнет.

[@Tharbamar]

I know it’s not conducive but better wait till it’s dried.

[@dilbyjones]

Careful buying things from high humidity area

[@Tharbamar]

It was not purchased recently I had this amp for last 20 years.

[@desbarry8414]

An amp that expensive shouldn't be developing faults like that. Lately Denon has had questionable reliability issues. Yamaha have much better reliability reputation. I no longer buy Denon for this reason.

[@Tharbamar]

This is 20 years old amp, all amps needs maintenance.

[@desbarry8414]

sorry man, it looks new, ok 20 years is good if its first fault lol