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No problem...glad it worked out. I spent hours upon hours sorting those things out a dozen years ago and still fix probably two-three a year for collectors when I can get the parts and my Motorola R2600 feels like turning on properly. I love those sets. No coincidence that they served us for...

Yeah those readings are high-high. If I didn't know better I'd say the radio's getting fed much higher than 25VDC, or there's still a problem with the A9400. Weird you had all that grounding/ long leads. I have *never* seen that before. That main filter just after the antenna microswitch...

The most up-to-date manuals for those are found here: Manuals Page There are lots of earlier revs out there but they're all from the pre-silicon days and won't help much in that regard. The basic compatibility of A9000s and A9400s is spelled out in the manual, but here's the short form...

There are a bunch of different test points on A9000. One problem is that the A9400 module (module with all the transistors screwed into the right side of the radio as you're looking at the faceplate) and the A9000 module have to be compatible. There were two variations of A9400: the original...