AG1980's leave a fair amount of their electronics "on" even when in standby mode. The front timer board is particularly known for having a couple caps run quite hot, even in standby - like we're talking 65 degrees C continuously on caps that are rated for 85C temp max. I always replace those with 105C caps whether they are bad or not, but I wouldn't want to chance having early cap failures needlessly there or elsewhere. Pretty much is a given that the SMT caps on the TBC board, so if those haven't been replaced, you can expect those to fail the rest of the way. After that and the deck being appropriately lubed and making sure the pinch roller is in good shape, they have been pretty reliable for me.
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