Tektronix oscilloscope focus pot.

Judging by your e-mail addr, you are in the uk, so you might try the company " Stewart of Reading ". They specialise in sales, repairs and refurbishment of test equipment, and in particular, 'scopes.

They've got a website where you can get contact details. If they can't help you direct, they can probably point you at someone who can.

Arfa

Best of luck sourcing this ... I had a similar problem not long ago with a CRT grid bias pot, and had the devil's own job finding a suitable substitute - in the end a friend found something out of his "junk box" which he'd stripped from a LOPT.

Piher might be able to help, but you can bet its not a stock item ...

Dave

Hi, I contacted Piher UK and they say they stopped making focus pots 8-10 years ago. They have suggested I try Panasonic as they make TV's.I will try this anyway. It would be a shame to waste a good scope because of one part.

which

Tektronix

Perhaps as a last resort you could wire in some resistors and use a standard pot with a plastic shaft? To reduce the voltage across the pot you'll lose some adjustment range but if you select the components correctly it should do the trick and be an adequate bodge. It certainly better than dumping the scope.

Dave

Have you tried contacting Deane Kidd? It's been some time since I spoke with him but presume he's still around. He retired from Tek after 43+ years and has a houseful (literally) of parts and manuals. He's supplied me with unobtanium relays and other bits over the years.

Deane Kidd

Steve

"Dave D" wrote in news:BYednUD_u7H snipped-for-privacy@pipex.net:

That is what I would do,after contacting Tektronix to make sure they are not still selling parts for that unit.

If that pot is mounted on the main board and not the front panel,then you could insulate it to prevent arcing to other components,and IIRC,it probably already uses a plastic shaft.(that's how my 2213 is)

You may not even have to add extra resistors,just use a regular 2 Megohm pot. I doubt it will throw off the focus string.

Try it,it will not hurt anything.

BTW,check the serial number,if it begins with a J,then it's a Japanese made scope,and if with a T,then Taiwan-made. Only B prefixes are US made TEK products.(H= Heenvereen,UK)

WHATTTTT !!!!! Heerenveen is in the Netherlands, you know. I almost ended up working for them (a long time ago).

Hi, Thanks everyone for the invaluable advice. Theres plenty here for me to look into in the new year or earlier. I let you know how I get on. Thanks again.

with

and has

unobtanium

years

with

can't

Sjouke Burry wrote in news:43acac5c$0$10080$ snipped-for-privacy@text.nova.planet.nl:

I thought it was a UK Channel Islands city. Sorry. (about the misspelling,too!)

Perhaps you were thinking of St Helier, the main town of Jersey? Well, it starts with an 'H'!

Dave

No problem,I did not even notice the spelling -)-)-) Only the UK looked funny,I was born 30 miles from Heerenveen and I assure you it wasnt UK.