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MrBungle · 21st Nov 2018, 1:39 pm

Found the cause of this in the end. U600 sweep IC was dicky. After some assistance on tekscopes list, I sprayed some freezer spray on U600 and it started working until it warmed up again. I had a spare 465 in the cupboard (with numerous far more serious problems) so I put the sweep IC out of that in the 475A and it works perfectly now. Phew.

21st Nov 2018, 1:39 pm	#5
MrBungle Dekatron Join Date: Jun 2016 Location: London, UK. Posts: 3,687	Re: Tektronix 475A intermittent sweep Found the cause of this in the end. U600 sweep IC was dicky. After some assistance on tekscopes list, I sprayed some freezer spray on U600 and it started working until it warmed up again. I had a spare 465 in the cupboard (with numerous far more serious problems) so I put the sweep IC out of that in the 475A and it works perfectly now. Phew.