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Re: 2215 CRT problem, PSU filtering?
Yep - I replaced them all just for good measure!
By Maxsimmonds1337@... · #168857 ·
Re: 2215 CRT problem, PSU filtering?
This is Very Good advice. I would not go into a scope and just replace one of the caps. They all can easily be in a similar condition in the near future. -- Michael Lynch Dardanelle, Arkansas
By Michael W. Lynch · #168856 ·
Re: 2215 CRT problem, PSU filtering?
While in there you might want to replace all the caps that where listed above, so as to future proof the PS section some more. Use nearest value and voltage equal or higher. Modern caps will be
By Alex · #168855 ·
Re: D34 ghosting blur
Hi Ondrej, see that post: /g/TekScopes/message/157201 The shadow / flare effect is explained Bye Max
By unclebanjoman · #168854 ·
Re: 2215 CRT problem, PSU filtering?
Sorry that should say "and I noticed the 33uF/160V on the 100V PSU output WAS DAMAGED, I REPLACED IT,...."
By Maxsimmonds1337@... · #168853 ·
Re: 2215 CRT problem, PSU filtering?
Good news! I replaced the PSU filter caps, and I noticed the 33uF/160V on the 100V PSU output, and it's all good! Looking at the base of this capacitor, it was quite obvious that it was the failed
By Maxsimmonds1337@... · #168852 ·
Tek 603 - recapped LV board, now moving on to other problems. Advice on -30V reg?
Hi, I've been working on a 603 XY and began by recapping and testing on Variac, which cleared up display bloom and a squiggle. What I have now is: * a somewhat defocused (2-3mm), very bright spot *
By toby@... · #168851 ·
Re: Tektronix 2230
Hi chipbee40 Yes, I am on 220v Thanks
By Saroj Pradhan · #168850 ·
Re: Tektronix 2230
Hi chipbee40 Thanks for your concern and suggestion. For c906 I had replaced by 100uf 450v type. And now I checked out of the circuit the esr meter shows 98uf and 0.34 esr. Thanks Saroj
By Saroj Pradhan · #168849 ·
Re: Wikipedia is not an appropriate topic for TekScopes. WAS repair tools: Autotransformers/variacs
I have two of these: http://w140.com/tekwiki/wiki/106 Now obsolete for my purposes as I have a couple of Leo Bodnar's marvelous <40 ps units. If anyone is interested in them PM me and I'll take
By Reginald Beardsley · #168848 ·
Re: S-52 only works with lowered +15 V power supply
Hi Max, Any progress? Today I used an S-52 on an extender, case removed, and then thought of your problem. I read your first post once more: The 1N3130 is a 50mA/25pF TD, while the original one is
By Albert Otten · #168847 ·
Re: What's the Tektronix part number for a dead spider
I see a couple of spiders plus some styrofoam. --Victor
By victor.silva · #168846 ·
Re: Tektronix 2230
I don't see in your messages where you have checked C906? Usually if 2 bridge rectifiers fail it burns out C906 (Large can), so you get rippled volts going through the power supply causing damage. I'm
By chipbee40 · #168845 ·
Spoken for: OT: Strobe light related -books FS
Hello-- The books are sold-- my thanks go to everyone who inquired. 73-- Brad? AA1IP
By Brad Thompson · #168844 ·
Re: (OT) repair tools: Autotransformers/variacs
- David Berlind5:16am #168839 --Somewhere (it has been a long time since I saw it), there's a video showing the cheap construction of the Chinese variacs [sic], the inaccuracy of the dial and the
By Ernesto · #168843 ·
Re: Tektronix 2230
Hi Leo I put on the scope without limiter bulb, it took away q9070, cr901and cr903. Fuse also blown away and ac mains tripped. I could not see any obvious short circuit near Q9070. At the beginning,
By Saroj Pradhan · #168842 ·
Re: (OT) repair tools: Autotransformers/variacs
It puts a smile only face reading all these "made in the US of A" comments :-) versus "Made in PRC" I'm really happy with my Dutch, Philips made, insulated adjustable transformer, which, IMHO also is
By satbeginner · #168841 ·
Re: What's the Tektronix part number for a dead spider
A friend once sent me a smallish meter from Aussie land.? When I opened the case there was a humpty great spider in residence. Fortunately, it was dead. My friend was horrified !! I'm not sure if he
By David Slipper · #168840 ·
Re: (OT) repair tools: Autotransformers/variacs
Somewhere (it has been a long time since I saw it), there's a video showing the cheap construction of the Chinese variacs [sic], the inaccuracy of the dial and the readouts, and the need to implement
By David Berlind · #168839 ·
Re: What's the Tektronix part number for a dead spider
Sorry to push the limit Dennis but I had to add an Aussie perspective ... we don't have a problem with critters in our cars. The snakes will get them:
By VK1GVC · #168838 ·