UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Telequipment/Tektronix D75 No trace on Power Up.

Diabolical Artificer · 11th Apr 2018, 6:56 am

"Cheers for that Andy, if I may call you that" no worries. I've attached pics of the PSU and CRT. Clogging up storage isn't an issue AFAIK.

I'd check the DC resistance with the 105v AC disconnected (149/1 & 2) of the circuit to find the short. Black lead of your DMM to ground/chassis. Poke about till you find the short and eliminate it.

Also as Bill says and Karl suggests check the caps and diodes of the Quintupler and see if you have AC at T3 & 2.

Andy.

11th Apr 2018, 6:56 am	#8
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,667	Re: Telequipment/Tektronix D75 No trace on Power Up. "Cheers for that Andy, if I may call you that" no worries. I've attached pics of the PSU and CRT. Clogging up storage isn't an issue AFAIK. I'd check the DC resistance with the 105v AC disconnected (149/1 & 2) of the circuit to find the short. Black lead of your DMM to ground/chassis. Poke about till you find the short and eliminate it. Also as Bill says and Karl suggests check the caps and diodes of the Quintupler and see if you have AC at T3 & 2. Andy. Attached Thumbnails __________________ Curiosity hasn't killed this cat...so far. Last edited by Diabolical Artificer; 11th Apr 2018 at 7:02 am.