I picked up this cb used with no mic. I was able to determine that it was wired for a Midland and everything worked except for there was no modulation. It would receive and transmit a carrier (confirmed with a local 7 miles away) but there was no modulation. Upon advice from this same local it was advised that on older radios a cap, as opposed to an audio chip, was responsible for modulation and that I should recap the radio. I did just that and now there is no rx or TX. I confirmed the right caps, right values and right orientation. What I didn't check before install was that the new caps were indeed good ( brand new). I've considered putting the old caps back but before I do I was hoping for some help. Any and all advice is welcome. A schematic would also be great! Thank you in advance!