UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Yaesu FT1000mp with dead controller. What now?

SiriusHardware · 28th Apr 2022, 6:58 pm

Looks like the uP itself has 80 pins but I don't know how fine the pitch of the pins will be. What you probably really want to do is lift individual pins on the uP to see if you can tell which pin that excess current is flowing out of, and to what, but only you will be able to judge whether you feel capable of melting the solder on individual uP pins, lifting them and resoldering them with minimum disturbance to the pins on either side. You should be able to rule out quite a few of the uP pins by reasoning, for example it probably isn't going to be the pins which the crystal is connected to.

28th Apr 2022, 6:58 pm	#43
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,601	Re: Yaesu FT1000mp with dead controller. What now? Looks like the uP itself has 80 pins but I don't know how fine the pitch of the pins will be. What you probably really want to do is lift individual pins on the uP to see if you can tell which pin that excess current is flowing out of, and to what, but only you will be able to judge whether you feel capable of melting the solder on individual uP pins, lifting them and resoldering them with minimum disturbance to the pins on either side. You should be able to rule out quite a few of the uP pins by reasoning, for example it probably isn't going to be the pins which the crystal is connected to.