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TALKINGWITHPYE · 25th Jul 2020, 3:04 pm

Hello all, I have a Marconi 2955a belonging to a friend. This has the internal 1.6a fuse blown but no sign of blackening inside it. The only lighting on power up is the leds above the N and BNc sockets. There is no relay click on power up. I am wondering if the BU105 is prone to going sc and possibly taking out the LOPT. I have ordered some 1.6a slow blow fuses and as the multimeter I have is a cheap and nasty one I have bought an AVO 8 mk 4 on e bay. I have told my friend not to be too optimistic but I would like to give a good go at repair. I have used these excellent devices in my working life but this is my first attempt to repair one.

25th Jul 2020, 3:04 pm	#1
TALKINGWITHPYE Pentode Join Date: Oct 2018 Location: Carrickfergus, County Antrim, Northern Ireland, UK. Posts: 126	Another Marconi 2955A help please Hello all, I have a Marconi 2955a belonging to a friend. This has the internal 1.6a fuse blown but no sign of blackening inside it. The only lighting on power up is the leds above the N and BNc sockets. There is no relay click on power up. I am wondering if the BU105 is prone to going sc and possibly taking out the LOPT. I have ordered some 1.6a slow blow fuses and as the multimeter I have is a cheap and nasty one I have bought an AVO 8 mk 4 on e bay. I have told my friend not to be too optimistic but I would like to give a good go at repair. I have used these excellent devices in my working life but this is my first attempt to repair one.