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Diabolical Artificer · 31st Jan 2019, 7:33 am

Checked most of the big caps and whilst they're all leaky, some over 1mA, there are non that are SC at wkg voltage so I suspect it's something further downline. The problem is that the fuse blows after 20/30 secs so it's hard to check voltages etc in that time, I'm going to have to see if I can disconnect the TB, CRT PSU etc in order to confirm the various voltage regulators are working ok. It's a bit of a nightmare though as this is a complex scope with a wiring loom more complex than a 737. Wire colour code isn't given on the schematic.

Will investigate further, Andy.

31st Jan 2019, 7:33 am	#4
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,657	Re: Tektronix 585A issues. Checked most of the big caps and whilst they're all leaky, some over 1mA, there are non that are SC at wkg voltage so I suspect it's something further downline. The problem is that the fuse blows after 20/30 secs so it's hard to check voltages etc in that time, I'm going to have to see if I can disconnect the TB, CRT PSU etc in order to confirm the various voltage regulators are working ok. It's a bit of a nightmare though as this is a complex scope with a wiring loom more complex than a 737. Wire colour code isn't given on the schematic. Will investigate further, Andy. __________________ Curiosity hasn't killed this cat...so far.