Microphone Repair

AL7HG · Post by **AL7HG** » Wed Nov 25, 2009 11:07 pm

My Icom HM-36 microphone has a short (no PTT) anyone know a reasonably priced repair shop that can fix this?

wx1f · Post by **wx1f** » Wed Nov 25, 2009 11:54 pm

Here's a web site that shows the schematic. Figuring out why 2 wires are not working should be a breeze now: http://images.google.com/imgres?imgurl= ... X%26um%3D1

k9yli · Post by **k9yli** » Fri Nov 27, 2009 9:36 pm

for all who read and have simialr type problems.
Likley you do not have a 'short'
A short would always be in ptt mode.
A short would be a 'true ' condition .. aka always on..
and 'open' is a 'not true' condition or always off.

Commonly people that have an electrical problem seem to say " it must
be a "short" somewhere.
"shorts" usually blow fuses and cause smoke.

Most failures are an "open" which causes a circuit to not operate as planned.

except for blowing fuses or smoke, you normally troubleshoot l for "OPEN" Circuits..

Just a bit of education for all..

wx1f · Post by **wx1f** » Fri Nov 27, 2009 9:45 pm

k9yli wrote:for all who read and have simialr type problems.
Likley you do not have a 'short'
A short would always be in ptt mode.
A short would be a 'true ' condition .. aka always on..
and 'open' is a 'not true' condition or always off.

Commonly people that have an electrical problem seem to say " it must
be a "short" somewhere.
"shorts" usually blow fuses and cause smoke.

Most failures are an "open" which causes a circuit to not operate as planned.

except for blowing fuses or smoke, you normally troubleshoot l for "OPEN" Circuits..

Just a bit of education for all..

Did you mean "similar" and .
"Likely"?

k9yli · Post by **k9yli** » Sat Nov 28, 2009 3:30 pm

Since the english language is readable with out vowels,
and its readable if only the first and last letters are correct and the interior of the word is mixed up,
I don't spend much time making corrections to what i type.

Also with my left ring finger having the final joint stiff from partial amputation with a power saw, I type 5 fingered on the right hand and one finger on the left.

also a problem i have had on soft keyboards forever is my right home row ring finger tends to lean on the "ell" key too much so I get L in stead of space quite often.

Written language is about getting the thought accross and
this BB is not about mastery of english or typing. Its about electronic information.

wx1f · Post by **wx1f** » Sat Nov 28, 2009 3:43 pm

k9yli wrote:Since the english language is readable with out vowels,
and its readable if only the first and last letters are correct and the interior of the word is mixed up,
I don't spend much time making corrections to what i type.

Also with my left ring finger having the final joint stiff from partial amputation with a power saw, I type 5 fingered on the right hand and one finger on the left.

also a problem i have had on soft keyboards forever is my right home row ring finger tends to lean on the "ell" key too much so I get L in stead of space quite often.

Written language is about getting the thought accross and
this BB is not about mastery of english or typing. Its about electronic information.

That's ok. I type the "Biblical Method"...Seek and Ye shall find!