Looking for old school radio repairmen

[robertwbob]

I need answers to questions on this courier classic pll.
I need to discuss it with some old school repair men not modern parts replacers

 

[MUTNAV]

So what was the actual question, most of us "parts re-placers" will try to avoid answering.



Thanks
Joel

 

[robertwbob]

So what was the actual question, most of us "parts re-placers" will try to avoid answering.



Thanks
Joel

Its to do with dc and ac and switching and possible internal trouble.id rather discuss this via pm here

 

[slowmover]

They’s a feller waaay out in the Nu Mexican desert said to be real good.

.

 

[robertwbob]

So what was the actual question, most of us "parts re-placers" will try to avoid answering.



Thanks
Joel

They’s a feller waaay out in the Nu Mexican desert said to be real good.

.

Yep i bet your spot on.

 

[robertwbob]

courier lives thanks to 1 person

 

[kc8kek]

But if you ask it in the open, everyone gets to benefit from the knowledge, which will also be here years from now when someone searches for something similar. It makes it more worth it for the person trying to help...just sayin

 

[kc8kek]

Yes, you'll have to ignore some nonsense replies, but forums are like that. So is CB radio

 

[merlin]

I would start by searching up some service manuals, schematics, trouble shooting guides.
These vintage PLLs go back to the beginning, before they married with processors. A lot of logic switching in simple forms.
Get the PLL chip part number and find a datasheet for it, basic logic from there.

 

[krokus]

They’s a feller waaay out in the Nu Mexican desert said to be real good.

.

At least his test equipment is calibrated.

 

[slowmover]

He even calibrated his test bench such that with some shims a marble won’t roll off.

 

[robertwbob]

But if you ask it in the open, everyone gets to benefit from the knowledge, which will also be here years from now when someone searches for something similar. It makes it more worth it for the person trying to help...just sayin

the diode that ends reverse current flow