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Old 2nd June 2006, 05:13 PM   #11
anatech is offline anatech  Canada
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Hi TroelsM,
I have a Philips PM3070. Many problems, I do not recommend them at all. The faults seem to be heat related. The later "combiscope" was offered, but I rejected them based on how much hotter certain parts got.

I'd be looking at the Tek scopes. The 2235 (I'm trying to fix mine) is a good scope.

-Chris (for what it's worth)
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Old 6th June 2006, 04:14 PM   #12
EC8010 is offline EC8010  United Kingdom
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No, we don't like Philips 'scopes over here either (poor triggering). I used to have a Tek485 until its EHT supply expired. Where did Tek hide it? Deep inside so that there wasn't a hope of probing it to determine the fault. After a few attempts at fixing it I gave up. Shame, I liked it, even though the screen was quite small. And I preferred it to the 465B. I'd avoid any early digital storage 'scopes. They have a low sample rate, short memory and are a nightmare to drive.
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Old 6th June 2006, 11:03 PM   #13
anatech is offline anatech  Canada
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Hi EC8010,
Quote:
I'd avoid any early digital storage 'scopes. They have a low sample rate, short memory and are a nightmare to drive.
Can't argue with you on that at all. I went with an analog (Philips) instead of the much better quality HP digital at the time. Resolution.
Sadly, it was still the right choice at the time.

-Chris
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Old 7th June 2006, 02:21 AM   #14
1audio is offline 1audio  United States
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Quote:
Originally posted by EC8010
I used to have a Tek485 until its EHT supply expired. Where did Tek hide it? Deep inside so that there wasn't a hope of probing it to determine the fault. After a few attempts at fixing it I gave up. Shame, I liked it, even though the screen was quite small. And I preferred it to the 465B.
I have received much help for Tek scopes on the Yahoo TekScopes group http://groups.yahoo.com/group/TekScopes/ . If you still have the 485 you might be able to get a working HV module from someone in the group. They also can help with suggestions on scopes and sources for info.
-Demian
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Old 7th June 2006, 03:33 AM   #15
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Quote:
Originally posted by EC8010
No, we don't like Philips 'scopes over here either (poor triggering).
Hewlett Packard worked overtime for about a decade and half to figure that problem out...
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Old 7th June 2006, 10:30 AM   #16
EC8010 is offline EC8010  United Kingdom
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Quote:
Originally posted by 1audio
I have received much help for Tek scopes on the Yahoo TekScopes group http://groups.yahoo.com/group/TekScopes/ .
Thanks for the pointer. Unfortunately, the 485 fell foul of the two-year-rule and went for landfill.

jackinnj: Interesting you should mention HP; when I evaluated an HP54600B its triggering was fine.
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Old 7th June 2006, 03:22 PM   #17
anatech is offline anatech  Canada
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Quote:
jackinnj: Interesting you should mention HP; when I evaluated an HP54600B its triggering was fine.
Ditto. The triggering was fine. It would even display an eye pattern! It just didn't have the fine detail required. Otherwise it was a fine 'scope.

-Chris
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Old 8th June 2006, 06:44 AM   #18
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If you want the best, yet small scope, get the 485. It is a great scope.
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Old 8th June 2006, 07:40 PM   #19
dfdye is offline dfdye  United States
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Quote:
Originally posted by john curl
If you want the best, yet small scope, get the 485. It is a great scope.
You call that small!?!?!?!?

I would love one of the new TDS2000's but until my 485 dies, there is no way.
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Old 8th June 2006, 08:10 PM   #20
EC8010 is offline EC8010  United Kingdom
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I once had a Tek555. It took two people to lift it. (Alrhough the power supply only needed one person.) I paid £10 for it.
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