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Thank you, Neil ZL3ADC , Dave ZS1DFR, and Bob W4JFA *Neil:* For now, I will hold off applying a heatsink to Q102 while I consider internal fan modifications.? I didn't feel that I needed to run the

Steve, Congrats! I have three questions, was the new FET the exact same part number? And, how old is this radio? Was the radio used mobile? I'm not sure about your wx but here in North Carolina

Congratulations on your tenacity, Steve! Kind regards, Dave zs1dfr@... "To a father growing old, nothing is dearer than a daughter" * Euripides 480 - 406 BCE*

Hi Steve. Excellent outcome! I think you need to fashion that heat sinking arrangement to give you some peace of mind for the future. The fact that fault occurred with pressure on board would

Thank you, Kurt KD6LZV.? That's very kind of you. And I have some good news!? ?I've now installed the new FET, and the rig is working again!? ? My SMD efforts looks OK from a distance, but not

Steve, et. al, Thank you for this detailed, clear, and illustrated description of this project. It takes effort to do this ! I appreciate it. Kurt KD6LZV

*Update: New FET received & old FET removed* The new FET arrived today, ahead of the de-solder wick.? Upon inspection, I was pleased to see that the FET 'tab' and 'source' connections are made from

Hi Neil ZL3ADC , Mark K5LXP, Geoff, Mike ZL1BTB *Additional Notes* I've looked for a crack in the case of the FET, but the case appears to be sound.? All the PTHs associated with the FET test OK,

Hi Steve The Freeze spray I had used a straw in noozle so you could direct a small amount onto the board. Have you been able to indemnify any component as yet? 73 Neil

its not a faulty plated thru hole? ?solder a piece of wire through to connect each side ??cheers? Mike zl1btb

I wish I could help you.? ?I had hoped that someone would have good news for you by now.? ? I assume that L701 is now broken, and that the faulty inductor means that the IC-7000 is now

*Removing the FET* Thank you, Mark K5LXP.? I had been pondering this aspect today, so your message is well-timed. I can easily heat all three terminals of the FET at once, but the tab (soldered to

Just a hint, the board and surrounding components are the primary concern when servicing.? There is no need to be "pretty" about removing a suspect part.? My first pass at this would be a wide, flat

Thank you Geoff, and Neil ZL3ADC I've now ordered some 1.5 mm Gootwick also!? ?I think that I'll do some practice with the braid on a scrap board before tackling the IC-7000.? I have found a

Hi Steve Saw the picture of the heatsink, you could probably do better with some copper plate. File it so it mounts the same but indented to touch the two devices case, add a bit of heatsink compound

Steve, spring load solder suckers on smd's can be disastrous. 2.5 mm braid will take too much heat which could lift tracks and otherwise do damage. 1.5mm is much better for smd

Thank you, Neil I'll be sure to check the PTH, and surrounding area.? When the fault is 'off', the FET (Q102) really does get very hot indeed during normal use.? I suspect this really stresses the

Hi Steve From the pictures, great job by the way. Under magnification looking at the plated through hole by the 560 ohm resistor and device it looks like there is a crack in the green coating, whether

The fault on/off conditions are most sensitive to pressure applied to: the case of the FET (white arrow); the drain terminal; the gate terminal; and an area of the board near to L103 (white arrow).

Hi Neil The soldering on the FET doesn't look as nice with my extra solder blobs, but I do feel that replacement of the suspect FET is now the next step.? This will be an IC-7000 strip-down task,