O.k I'm about to use my ps125 as a parts kit. Anybody have a fix for this inncessant high pitched whistle. I'm guessing it's the caps? It drives me nuts.
Its only 2yrs old.
Thanks
Paul
icom ps125 whine 50 Lookers and nobody knows??
icom ps125 whine 50 Lookers and nobody knows??
Last edited by N1QOQ on Mon Nov 26, 2007 10:25 pm, edited 1 time in total.
Re: icom ps125 whine
n1qoq wrote:O.k I'm about to use my ps125 as a parts kit. Anybody have a fix for this inncessant high pitched whistle. I'm guessing it's the caps? It drives me nuts.
Its only 2yrs old.
Thanks
Paul
yea donate it to an old guy like me with a high freqency hearing loss it wont bother me hi hi
73 de chuck
I believe it is a switching supply.
The noise is from the supply.
No I don't have a scope.
It varies in intensity, sometimes it stops.
I have read of this before in a post on this board, but with no solution.
I fiqured I would ask some opinions here before I "fixed" it with a hammer.
Thanks for the responce
Paul
The noise is from the supply.
No I don't have a scope.
It varies in intensity, sometimes it stops.
I have read of this before in a post on this board, but with no solution.
I fiqured I would ask some opinions here before I "fixed" it with a hammer.
Thanks for the responce
Paul
So I got motivated and pulled the ps apart . Now it's been a few years since I took electronics and I don't know every thing (don't tell my wife). But I got a nice tingle off the TOPS of the two 1200uF caps with a reading of158vdc between the two. This does not sound right or do I know less than I think?
Thanks
Paul
Thanks
Paul
send me that thing quick before you hurt your selfN1QOQ wrote:So I got motivated and pulled the ps apart . Now it's been a few years since I took electronics and I don't know every thing (don't tell my wife). But I got a nice tingle off the TOPS of the two 1200uF caps with a reading of158vdc between the two. This does not sound right or do I know less than I think?
Thanks
Paul
73 chuck
What I remember from science class, in order to produce a sound wave something has to move the air to create the sound wave!
So this is how I find the whine in a switcher. Take to cover off and push on the parts with a insulated stick. When you find the vibrating part, get some glue.
Some times it is a cap. that is making the noise, so just change it.
Or maybe trade it to one of us older guys that have lost our high freq hearing
Hope this helps
So this is how I find the whine in a switcher. Take to cover off and push on the parts with a insulated stick. When you find the vibrating part, get some glue.
Some times it is a cap. that is making the noise, so just change it.
Or maybe trade it to one of us older guys that have lost our high freq hearing
Hope this helps
Gary N4JNE
WHINE
posting most ly as a test.
Any way. correct. noise needs vibration of something.
"singing" sound can come from transfomrer windings vibrating.
You can get the sticks you need for troublshooting things you dont want to touch with your fingers or a meta tool, get a couple of chopsticks, and also some shish-ke-bob sticks from wally world.
handy to push on relay contacts that may be failing etc.
your problem could be a noisy fan. if it has one.
also save a paper towel roll.
makes an "ear trumpet" to localize sound.
k9yli
Any way. correct. noise needs vibration of something.
"singing" sound can come from transfomrer windings vibrating.
You can get the sticks you need for troublshooting things you dont want to touch with your fingers or a meta tool, get a couple of chopsticks, and also some shish-ke-bob sticks from wally world.
handy to push on relay contacts that may be failing etc.
your problem could be a noisy fan. if it has one.
also save a paper towel roll.
makes an "ear trumpet" to localize sound.
k9yli