Transmits OK on SSB but not AM

[Critter98]

Hi all. I have a Realistic TRC-453 AM/SSB radio. Modulation is great on both SBs. Throws a great carrier on AM but no modulation. I haven't taken the radio apart yet and I'd like to know what I should look for inside.
Tks in adv.

[MDYoungblood]

It is probably the AM voltage regulator, usually located on the right side chassis, doubt if there are any replacements but there are plenty of donor radios at flea markets etc., so if it is in good shape, don't toss it.

3's

Greg

[Critter98]

Thanks Greg. I'll check it out.

[Critter98]

So if the 2SA3012 Resistor is what you're referring to as the AM Regulator, I checked that and it seems ok. PITA to take it out and put it back though. I've replaced 1/2 doz capacitors also but that changed nothing. Monday I'll be buying an ESR device that will test Resistors, Transistors, Capacitors & diodes. I saw a youtube guy using one and its a pretty simple operation.

[Critter98]

So after changing some more caps I've got the radio tx on AM now but it sounds fuzzy to the rx. I'll be changing more caps.