Who used the J7044 MosFet for a final, have a terminal issue. 706MKIIG/775(DSP)Finals These two, probably others, and any manuf. Tx power is radically different on different bands, probably the detwector diodes on the filter unit. This is used in all the 706 series radio's, and the symptom is the radio won't turn on, and you hear a 'click' 'click' (relay closing and opening) Dead, no Rx/no Tx, check the 5v regulators on the PLL unit, there are 3 of them. If you get a DC surge, there is a 4.7 ohm surface mount resistor on the bottom side of the PA unit, that is a fuse resitor for the regulators on the PLL unit. This entry was posted in on.ħ06MKIIG Common Issues The DSP unit can get oxidized connections, resulting in garbled SSB operation/Mode mishaps/and dead modes (while other modes work fine) simply unplug the flex cable, and plug it back in, carefully. Now it is hard as a rock and cracked: After repair my very old Icom is working as new. In my case it happened in humid and damp sites near Mediterranean sea. Thanks to I try to check same place on PLL board.Īnd I found same issue was there! Affected area, bypassed with a jumper wire: I isolate place with nail polish: The rubber pad under the PLL Unit caused corrosion of the “HV” trace. I am checked power wires, fuses, but all were okay, so I started to find same problems and its solutions in internet. Since my journey to my very old (one of the very first serial number) ICOM IC-706MKIIG have had an issue – it started shut off when it warm up. ICOM IC-7000 HF/VHF/UHF Transceiver 1Theiginal or IC-706 review appeared in March 1996 QST. 151xx serial number (newer Mitsubishi finals) with DSP and 1.9KHz SSB filter. Icom IC-706 MkIIG from non-smoking shack.
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