Marconi T89DA PILOT BULB - UK Vintage Radio Repair and Restoration Discussion Forum

Dorian27 · 21st Jun 2022, 11:27 am

Hi just got 4 new pilot light bulbs as recommended in service sheet for this model 12v 0.1a and it immediately blew them. I have tried 12v 200ma but very dim any suggestions what to do next please i have ordered 12v 100ma now but don't know if i done the Wright thing any help would be appreciated

Heatercathodeshort · 21st Jun 2022, 8:08 pm

Make sure you have the VA1010 thermistor wired across the bulbs marked X1 on the circuit. J.

peter_sol · 21st Jun 2022, 9:12 pm

100ma. Is the same as 0.1 A

21st Jun 2022, 11:27 am	#1
Dorian27 Heptode Join Date: Jun 2018 Location: Carmarthenshire, Wales, UK. Posts: 564	Marconi T89DA PILOT BULB Hi just got 4 new pilot light bulbs as recommended in service sheet for this model 12v 0.1a and it immediately blew them. I have tried 12v 200ma but very dim any suggestions what to do next please i have ordered 12v 100ma now but don't know if i done the Wright thing any help would be appreciated

21st Jun 2022, 8:08 pm	#2
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Marconi T89DA PILOT BULB Make sure you have the VA1010 thermistor wired across the bulbs marked X1 on the circuit. J.

21st Jun 2022, 9:12 pm	#3
peter_sol Octode Join Date: Aug 2003 Location: Welwyn Garden City, Herts. UK. Posts: 1,906	Re: Marconi T89DA PILOT BULB 100ma. Is the same as 0.1 A