gary o

Beta 87 fault quick question
« on: February 13, 2019, 10:53:10 AM »
Hi I know there lots of wise heads here wondered if I could have your thoughts....

My beta 87 works fine for 30 secs of a minute or two then audio fades to nothing..... if I un plug plug back in it works again full level but again for 30 secs to two mins again....

I have cleaned the board re soldered connections.....if I take basket off I hear the usual hum and the hum fades away with the audio....so I think capsule its self is ok....

any thoughts would be very welcome thanks


Khron

Re: Beta 87 fault quick question
« Reply #1 on: February 13, 2019, 11:00:20 AM »
Photos of the circuitry?
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

gary o

Re: Beta 87 fault quick question
« Reply #2 on: February 15, 2019, 11:10:36 AM »
Hi Khron thanks for response sorry I been out singing for my money... got no pics at moment poor mic not in great shape it the FET died years ago was replaced with a 2N3819 am I right in saying tho wrong FET should work & wouldnt be the cause of the audio fading..... or could it be.....


 

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