Look at the service bulletins on the 120/130. The full output power carrier on ssb was also caused by leaky diodes on that same rf board. I've fixed many in the past, real pain. Also the bias pots go bad on the power amplifier and ruin the drivers and finals. Very important to check for proper idling current. These rigs suffer from cold solder joints too. Great rigs when working properly.
That is what I like simple fixes. I still have my TS-120V and AT-120 which I bought new in 1980, it still works but is about 500hz off frequency. It's not in good condition having spent it's first 10 years as my mobile radio.
Look at the service bulletins on the 120/130. The full output power carrier on ssb was also caused by leaky diodes on that same rf board. I've fixed many in the past, real pain. Also the bias pots go bad on the power amplifier and ruin the drivers and finals. Very important to check for proper idling current. These rigs suffer from cold solder joints too. Great rigs when working properly.
Some very early 120S models ex factory also took off sometimes even when new ... replacement of finals under warranty fixed that.
hi, are you still in adelaide ?
Any things to look for on a ts530sp?
Older Kenwoods TS520 S TS120 V S and TS820 s were troublesome with grounding, that's not a good ground under a screw.
un equipo muy robusto
Fixing to purchase a working one for $281 on eBay.
That is what I like simple fixes. I still have my TS-120V and AT-120 which I bought new in 1980, it still works but is about 500hz off frequency.
It's not in good condition having spent it's first 10 years as my mobile radio.