Help with Uniden Grant XL

[crappykraco]

I have a Grant XL purchased on ebay. When I got it it would power up, receive just fine, but no TX light change. I found cracked solder joints on all three legs of the final and repaired. Did a shotgun replacement of all electrolytic caps (it had black YEC for the most part), and got TX back.

Grant XL into a watt meter and dummy load yields the following:

AM mode channel 1: 1/2 watt DK swings to 4 watts
AM mode channel 20: 1/2 watt DK swings to 4+ watts
AM mode channel 40: 1/2 watt DK swings to 3 watts

LSB channel 1: 5 watts
LSB channel 20: 6 watts
LSB channel 40: 3 watts

So uneven and lower than expected TX power. I've included a picture. I see one coil is missing its wax and has been adjusted and it looks like a couple wires used to be soldered to the back of audio transformer.

I am an electronics novice at best, but have some basic test equipment and can solder.

I have a multimeter, BK 1040, a freq counter and an old hitachi scope but I'm 95% clueless when it comes to using it.
I hope to be able to return this radio to normal operation with help from the kind folks here.

 

[crappykraco]

 

[SuperLid]

First thing I would do, is go through the TX alignment, see where that brings you.

 

[nomadradio]

Do you have an alignment tool with the proper 1.5 mm tip on it? The old G-C number for that one was 9440. They show up on fleabay. Just don't try to use a metal screwdriver to adjust the small tuning cores. The entire problem may be alignment. The black ferrite cores (slugs) are brittle. If you crack one, that can be a headache.

Do you have a dummy load and source of an audio tone? My preferred way to peak the adjustments in the transmit chain is on SSB with a steady tone into the mike, turned down under a Watt. This makes peak settings easier to observe.

Not much point to digging deeper until you're sure it's aligned for max power.

73