Topic: Edirol R09-HR inline status question

[phil_er_up]

hi all,

Searched the forums for about an hour this morning and found the following info:

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"from guysonic's site (he prefers isopropyl alcohol):

Clean & recondition noisy mic. jacks with 91 - 99% pure isopropyl
alcohol. Repeatedly insert a headphone type plug soaked to the point of
dripping (filling the alcohol bottle cap and dipping only the metal part
of the mini-plug works well) into the mic jack until any connection
noise disappears. Monitor the progress with a set of headphones while
the deck is in a record function. Rotating the microphones plug should
not produce audible noise with cleaned and conditioned contacts.
Applying a contact conditioner to already cleaned plug and jack metal
parts"

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Problem:

I have an edirol R09-HR and the last 2 recording I started having static on one channel (believe it the right) lately and its intermittent. Seems like when I look at in the fanny pack or when I move sometimes cause static. No drops outs. I ran a new Pre-amp and brand new cord with it the second time and same problem. So I don't think its the pre-amp's or cords I been using or that my theory so far.

I have cleaned many audio components at home with De-oxit gold and red cans and used contact cleaner. I have  isopropyl alcohol 70% thou not 90 %.

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Solution:

Willing to give guys sonic a try to fix the static.

My question is you leave the unit off when cleaning it then after it dries the  isopropyl alcohol you check the edirol.
Is that correct?

When I check the edirol do I move the cord to see if there is static or just let it record for about an hour and check the file for static?

Any other suggestions would be welcomed.

[fmaderjr]

You can leave the deck on when cleaning the jacks if you want to use guy's method of testing with headphones:
   Monitor the progress with a set of headphones while the deck is in a record function. Rotating the microphones plug should not produce audible noise with
   cleaned and conditioned contacts.

When you get no noise this way, then you can let it dry a bit and make a test recording to confirm it is fixed.

Remember than the static may be caused by build up on the mic plug (or, if applicable, your battery box/preamp jacks and the 1/8 plugs on the output cable) as well as the recorder jack, so use the system you quoted to clean everything.

[phil_er_up]

You can leave the deck on when cleaning the jacks if you want to use guy's method of testing with headphones:
   Monitor the progress with a set of headphones while the deck is in a record function. Rotating the microphones plug should not produce audible noise with
   cleaned and conditioned contacts.

When you get no noise this way, then you can let it dry a bit and make a test recording to confirm it is fixed.

Remember than the static may be caused by build up on the mic plug (or, if applicable, your battery box/preamp jacks and the 1/8 plugs on the output cable) as well as the recorder jack, so use the system you quoted to clean everything.

First thanks to fmaderjr for your reply. It is appreciated.

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Went and purchased 91 pure isopropyl alcohol yesterday during the Pres visit to boulder - OMG. It took me an hour to drive to get it...he waved at me....might of made it worth it looking back...LOL.

Anyway the  Edirol R09-HR does not have a headphone jack, so I could not run that test. I did the soaking of the tip of the cord and put it into the  Edirol R09-HR inline connection. After drying I turned on the edirol on and turned the recorder way up and moved the cord and no digi noise.

Took it to the Boulder Outdoor Labor day festival today and tried it out for 50 minutes. Got home opened the files in wavlab and ran analyze funtion and visually looked at file. No large spikes visible. Listened to the recording all the way thru and digi noise. So seems like this was the problem.

Ordered another small recorder for back up now...

Thanks all!

[fmaderjr]

the  Edirol R09-HR does not have a headphone jack

All the recorders we use have a headphone jack, I think (sometimes doubling as a line out). The HR's is on top between the 2 mics, if you ever need it.

Sorry to hear that you may still have a problem with your HR.