MFJ 998RT Repair and Mod - failed K1 Relay and R121

This is an alternative repair to the one suggested by JH3CLV who fabricated a heat sink for R121. This video and repair was done in 2014. Unfortunately, since then JH3CLV has suffered 2 more failures. However, my tuner has not suffered a failure for 4 years since my repair. However, no inference as to the efficacy of my approach should be taken from this experience as I most likely have been just lucky!
Links to JH3CLV discussion on issue:
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Any comments or suggestions as to why this situation occurred and what are better repairs and mods are welcome. One mod I do intend to make is to use heaver gauge leads to the resistor than the ones shown.
73,
Frank

[@CapinCooke]

Just received my 998RT today (May 25, 2021). Have not unboxed it yet. If my newer unit still has the 15 watt resistor without a heatsink on it I may do a bit of preventative maintenance and use your 100 watt resistor solution before hooking it into my station.
Thanks for posting your solution!
Bill - W7JZE

[@tmaenp]

This is not first time when MFJ sucks… But nice modification !! 👍😊

[@barrykery1175]

Great tip. Thanks, KU3X

[@edwinrichter3181]

This resistor is most likely carrying high frequency (to be investigated)In this case it is not a bright idea to connect it with such a long wire

[@zhaqirhussein]

I have a problem with the mfj 939 tuner when the swr indicator is on sometimes and the K1 relay sometimes works sometimes doesn't work, is the problem the same as your tuner ?

[@xxmrrickxx]

How were you able to figure our which relay was bad? 😀😀