Hello Andy,
Any chance did you met to say L28 instead of L22 ?
L22 on the schematics that I am looking at is tied into the channel selector and the main Ic chip pin 2. I didn't follow any more of what else it is tied into.
Its a tunable transformer with the ferrite slug.
Without having the original schematics along with maybe the correct "BOM" sheet,
I am burning through unnecessary parts! I am not sure if there are parts or jumpers on here that does or does not belong. I thought I had it somewhat working with about 1.5 watts for a moment until the audio chip over heated and the smoke escaped out of it!!! (Not really smiling when that happen)
Only reason for wanting to install an ir520 mosfet because I could not find any bipolar finals and drivers. Good thing is I am getting an education on these mosfets!
Does anyone know of any substitute at all for these bi-polar transistors?
Even if they are at a lower wattage.
Also does anyone have a cobra 29 that has a build of Feb 07?
Its been a while since I have pulled my hairs on something that should be somewhat
easy. I must be thinking to hard or something.
Signed: frustrated and confused!
