1).? The only time I saw the frequency control going the opposite direction was when a friend of mine gave me his modified radio to repair.? The previous owner swapped the outputs from the dial direction sensors, on purpose.? So I had to reverse that? and the radio is back in service.? No issues reported since.
It may be difficult to replicate your problem now, that you power-cycled the radio.? But take a look at the schematics.? The knob direction sensors are located on two identical boards PB-2377.? The outputs, Φ1 and Φ2 are passed to the Dial Unit PB-2386A where they are processed to produce the Up/Down data.? It exits that board via J1303 (pins 3,4) and goes to the microprocessor.? Try reseating J1303 and maybe check for cold solder joints on that board.? Also, check the RAM battery, just in case.
2).? Here is what I have in my notes on that topic:
12v 100mA axial leaded filament lamp bulb
measure 0.16"(4mm) diameter by 0.8"(20mm) long fits FT102 , FT-ONE and FT-980 radios. Also fits FL-7000 amplifier and FRG-7700 receiver.
In absence of known sources of the replacement parts, I modified my radios with the white LEDs.? Take a look at photos posted in the folder that has the Meter Lamps in the name (cannot access groups.io right now).?
73, Wald N4PL
On Tuesday, February 8, 2022, 10:23:22 AM EST, Brian Harris via groups.io <cosmophone@...> wrote:
Yesterday I was in a 40 meter QSO and we needed to move up in frequency a bit. I noticed when I turned the VFO clockwise the displayed frequency decreased and, conversely, when I turned the dial counter-clockwise the displayed frequency increased.? I don’t if the operating frequency did the same.? I changed to several different bands and it behaved the same so I shut it off and went to my backup rig, a B&W 5100B.? When my QSO ended I turned the FT-980 on again and all was normal. This transceiver has never had a thing done to it except battery replacement and that was years ago. I’m an experienced electrical engineer and technician so I am not afraid to delve into it but was curious if anyone observed this behavior before and, if so, what was the cause?? I figure a loose or dirty connection is likely. Also, what’s a good source for the panel lamps?? The one in the S meter is out. Thank you, Brian Harris WA5UEK
N4PL