Another trick discussed here is using a light bulb (Say 100W) as a fuse. Solder the light bulb contacts across your open fuse. The brightness will indicate current flow and as a resistor protects agai

The CRT list on is on my website Home http://www.go2geekguy.info/home.html Home http://www.go2geekguy.info/home.html CRT prices are on the CRT list CRT orders will be filled in order of email request

Thanks Bob

Is there a common pin-out for Tek CRTs, or source for that? I would like to check the filament continuity of the recently acquired CRTs. Bob

Well, with some progress on my 485 (message 112609 which still has a open question), I did an initial inventory and have over 60 CRTS. Mostly Tek, a few HP and Misc. Some funnies: box labeled 050-0776

Would appreciate some advice Background Originally this 485-1 only worked on DC channel 2. All PS voltages OK, very low if any ripple. Found burned input resisters, now replaced. Cleaned attenuator co

Looks interesting. I am going to have to check this out. $30 for a Simpson 260. Since he doesn't ship, is anyone looking for something that might be there when I go? Bob Fluke, Tektronix, HP, Tubes, E

The guy I bought the CRTs from also has a 561A (rack mount type). He is in the tube recycling business and so far has refrained from parting out the 561A. It comes with a cart and 4 plugins. He is ask

Well, they found a home. Spent yesterday and today organizing my garage and shed (already full with scopes). As I am in the middle of a 485 repair and those parts just arrived, it will be a few weeks

Sorry for the title, should be needed. Must be my pain meds. Bob

A 485 I have been working on needs a couple of resistors replaced in the vertical amp. The resistor set of 10 ohms feeding the delay line are measuring from 13 to 39 ohms. A few sites are selling carb

Picked up this 465 today. I think the CRT is ok. He said he looked inside and found a loose wire from the vertical amplifier but the CRT pins are Ok. He also gave me a break on the price for coming to

Thanks for the reply,It's about a half hour from my house so I hope to check it out this week.Bob

Can't tell if the curved trace is a problem or just some stray AC. Looks like it is set to a very slow sweep http://sacramento.craigslist.org/bfs/4616163487.html http://sacramento.craigslist.org/bfs/4

Might add the 'Shake' test. Shake the scope gently to see if there is anything loose rolling around inside. Bob

Almost worth a trip http://sfbay.craigslist.org/nby/ele/4076457298.html no connection to seller

Hi, I once had a 442 and fixed a problem similar to yours. This was also reported by me on another forum a few years ago: (from that posting) ". I have experience with the 442 including fixing the pro

This is totally off the purpose of this forum. I am sure there are other places for this discussion. Please end it. Bob

Stefan, Thanks for the tip on those sites, I have requested membership. I also would like to join these discussions but hesitate as this doesn't seem like the place. Bob

Great! It would be a shame if they had ended up being thrown away. Bob