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But the rx while TX is somewhat of an indicator. Does the light change? I guess no.

Yep, been there. Check over the shields, lift them a little. Then, reheat all joints along the regulator side of the rail.

Great job on getting it going Hawkeye! I expected no less from you and you delivered.

Check the inductor to ground on the driver base, make sure it didn't open up.

If I recall, does that radio not have a modulation vr adjustment? I know there is a mod to add it at that missing transformer. A pic would be helpful too. Edit, is it this guy? If so, I think that's for modulation if my memory is correct. It's the madison and washington that deleted the vr and...

Groovy. Find another transistor for that spot and replace it.

If the resistors are correct, and the input voltage is correct, the base should show 1.5 volts. That's... Vo=Vi(r2/(r1+r2)) Assuming 8.29 volts x 330/(1500+330) 8.29x330/1830 8.29x.180= 1.4949v Something is amiss here.

Idk why the emitter has a voltage, it's just a resistor and cap connected to ground. Check that out. The pin out should be BCE, left to right, front of transistor. Maybe you read that backwards?

Yes.

A 104 is 100,000 pf, or 100nf, or .1uf.

With tr45 removed, what are the voltages on those pads, particular the base pad. Only thing I can come up with is a short somewhere on the traces, a leak in the transistor or a coupling or feedback cap went resistive.

That has me stumped. Assuming the 1.5k was shorted, that's .024A / .193 Watt across the 330 and if he used 1/8 watt that would burn up in time. Also, the base would have seen 7.92 volts. But it didn't. If the 1.5K changed to say 750, that would put out 2.44 volts to the base as close to what...

Ok, you nailed it Brandon. That divider was over biasing that transistor, turning it on hard and burning the emitter resistor, right?

Check R221 and R222. Where is R330?

And check tr45 also.

Check the resistors Brandon mentioned. Check c275 while in there. I really think Brandon hit on something.

Right, I have been talking to him in messages and didn't notice his comment, and open/changed value resistors are found along with open caps and junctions. I'm trying to figure out what happened to this rig. There are issues everywhere, but we got the regulator right now (vr13) and verified the...

I suspect that you have the rf pa section firing up and pulling on the regulator, and when the regulator is idling by it can keep up the voltage, but when your downstream sections start working and pulling a load, the regulator section is showing you that it still has a problem. This is assuming...

Verify vr13 is good? Replacing those parts shouldn't affect the regulator unless the driver and final are getting hot from turning hard on. That would pull the regulator hard on and it would get hot too. I assume that isn't happening so check vr13 and post voltages of all included components of...

Had one doing almost the same today but with bias voltage expected, turns out the predriver wasn't receiving 27 MHz from the tx mixer because of a shorted capacitor shorting the TX mixer out. Wouldn't have noticed if I hadn't felt a resistor giving off too much heat. A quick look at the thermal...