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So what you're saying is that your tech was suggesting microchipz vco11 was nothing more than a suggestion and not a tried and true testament of actually using thr microchipz product? Im a bit confused
Hey Nomad, firstly, I appreciate your support to the hobby in this forum. As for the coil cans I've worked with in the past, they had a disk shaped silver mica sheet that circled the base of the transformer inside the case. I often saw them in 5 tube AM brodcast desk type radios. The cans would...
I contacted microchipz and this is what they told me. Is there anyone else in thevforum that can vouch for the VCO version 1.1 from these guys before I send them a bunch of money? Shipping to Canada is crazy money from the UK. Here's that screen shot of what he said...
Yup. I call em cans. Not to be mistaken for the big old caps though. Yeah. A lot of these transformer cans have caps in them that fail. I know that in the newer radios the slug positioning can be a tell tale sign of a bad internal cap. Small pico value. Ive seen these go bad and spark in...
Lots af great info. Thanks guys. Im gonna recap the mofo andcsee wherevthst gets me. Something tells me that the vco msy still work and if not, I'll borrow one from one of my other cybernet chassis.
Great video. Ive seen a lot of his videos. Pretty easy to restore the VCO it seems. I just have to figure out how to test the block for functionality first.
Its odd as heck. The schematic shows a 5.5v source feeding 1 side ofvthe VCO. There is an output that goes to pin 1 IC201 and it says 2.7v. Hand written. Something doesnt make sense.
Update: tp1 is not adjustable. Its solid at 5.5v and its supposed to be adjusted to 3.6v. When turning the VCO, i can hear shifting as if dialing in a portable AM pocket radio but nothing audible just hissing. Then, there are more issues. The tx light is flickering on and off while in rx mode...
So far, I did some quick tests, and some detailed visual. The runs where the big cap was that got smooged tested all fine end to end. Tantalums tested no shorts. Finals seem odd. Need to lift 2 sides in order to properly test them. This is going to be a detailed circuit trace job. Hope its...
I got into it this morning. Looks like someone changed the big cap and cleaned up that part of the board. I do see other leaky caps. Will change them out shortly. I also see a few tantalums that like to short out and take parts with them. I didnt know that they hadca mobile version ofvthis...
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