I think that if it doesn't work, it may be time to replace. The oil may help it survive longer if it is returned to working condition, but in itself I don't see that as a repair.
>From: Timothy Wisniewski <[log in to unmask]>
>Sent: Sep 9, 2012 11:13 AM
>To: [log in to unmask]
>Subject: Re: [ARSCLIST] Underwater Zoom H4n
>Thanks, everyone for the helpful tips! I've rinsed and bathed the
>Zoom in fresh water and its now buried in a large bowl of uncooked
>white rice (medium grain is all I had at hand), where it will remain
>for at least 2 days. If this doesn't work, would you recommend
>opening the zoom and spraying the circuit board with an electrical
>contact cleaner, followed by another bath/rinse in distilled water
>and 2 day rice burial?
>On Sep 9, 2012, at 11:56 AM, Hood, Mark wrote:
>> I would recommend distilled water for the de-salting bath as
>> opposed to
>> plain tap water, which still contains many dissolved salts and
>> that will coat switch contacts and the like.
>> I recall a sweat-drenched Sony wireless body-pack transmitter that
>> completely ceased to function after being strapped to a particularly
>> athletic theater performer (despite being wrapped in TWO protective
>> condoms). Assuming it was permanently DOA and having nothing to
>> lose, I
>> bathed it repeatedly in distilled water and blew the vapors off
>> with a can
>> of compressed air. It then spent a few days in the hot, dry
>> airstream of
>> an amp rack. It powered back up and performed without complaint
>> for the
>> rest of the tour.
>> I've never tried the rice drying technique, but it seems credible...
>> Mark Hood
>> Assistant Professor of Music
>> Department of Recording Arts
>> IU Jacobs School of Music
>> On 9/8/12 9:40 PM, "Richard L. Hess" <[log in to unmask]> wrote:
>>> My son walked into my brother-in-law's pool with his Blackberry.
>>> We pulled the battery, ran it under fresh water, and then very gently
>>> with a hair dryer to no avail.
>>> Two days in a cup with uncooked rice and it's been working ever
>>> With chlorine or salt, you need the fresh water ASAP.
>>> I don't know what this will do to the mics, but I think his
>>> mic is even OK.
>>> Richard L. Hess email: [log in to unmask]
>>> Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
>>> Quality tape transfers -- even from hard-to-play tapes.
>Timothy Wisniewski, M.L.I.S.
>Visual Materials Archivist
>Alan Mason Chesney Medical Archives
>Johns Hopkins University Medical Institutions
>5801 Smith Avenue, Suite 235
>Baltimore, MD 21209