Months back I got an FT-101e and recapped it and it has been working great the few times I've used it for extended hours (like 6 hours straight a few times!) but now I have this problem where the audio gets cut down a lot and the S-Meter goes down too. I tried wiggling the PL-259 connector, reseating the bulb, moving the band mode, rf gain, rf attenuator switches, cleaning the "Antenna Relay" in the HV cave and even poking around with chopsticks on the modules to wiggle them back and forth and I can't find it. Even tried poking around at the wires around the switches to see if it was some kind of cold joint that is being affected by temperature. The problem manifests itself even if the bulb is removed, the antenna relay removed or if there is no antenna attached. When I first suspected the bulb I cleaned it and the socket with de-oxit and it's unrelated to the problem. If I turn on the 25/100khz tune the output is also lowered when the crackling happens. RF Attenuator is working and so are the knobs because even at low volume if I flick the switch or adjust those knobs I can hear small changes. When this problem is occurring you can still hear stations it's just the audio and s-meter levels have been knocked down to near S2 or S3 on the meter and the volume to go with it. On 40m where I might have a noise level of S5-S7 when this problem happens (which is now pretty much non-stop even after I left it sit for a day to cool down) it drops down to S0. Even with the faint noise you would hear with those things disconnected and the volume at max you can still hear this audio getting much lower and intermittently going back to the original level. It's like as if there is a cold joint but I can't find it and I have no clue where to look. I do have a scope, so if someone can guide the blind here I'd appreciate any help. I'm out of ideas at this point with the basic tests I've performed.