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I considered that theoretical possibility, but didn't include it in my post because I haven't seen it. Shame it turns out to be a practical problem.

I just saw again how really annoying it can be: try a search at the web site for "130 L-C meter". Albert ---In TekScopes@..., <tggzzz@...> wrote : More postings are becoming contaminated

As far as I can see the circuit protects against a too high +55V UNREG voltage. If higher than 82 V the SCR gets triggered and (eventually) the fuse will blow. Did you measure +55V UNREG (across

I have a 581A Tek scope I saved from the dumpster. It turns out that it doesn't trigger any signal at all. Worth looking into it? -- Christoph

Congrats. Do you also have a PG506 ? And SG503? -- Christoph

Hi to All, With several TM506A's it seems handy to me to convert the SG5010 for operating in one of these. The SG5010 has a provision to replace the GPIB/PLL Board a little more inside the enclosure.

Hi Neil, I think you' d better follow Raymond's advice. In diagram <8> you can see that U870 needs the -8V supply to establish Vee. You (and I) probably have no idea what consequences an absent -8V

Hi to All, Only a renewal of this Post in case somebody missed it. Greetings, Egge Siert

Hi again, It seems that nobody on this forum has this device and.or its Instruction/Data Sheet. Of course I will pay for this information. Therefore this request again. Greetings, Egge Siert

Thank you for all the help! After changing all the caps on the inverter and regulator boards, the voltages are perfectly centered as per the spec. limits. Ripple is 10x smaller. Traces are more crisp

More postings are becoming contaminated with "line noise" like "#yiv7938461022 #yiv7938461022 -- #yiv7" etc. I presume it is a de-html-ed version of the adverts at Yahoo! appends to each posting.

HiThanks to everyone for their comments and thoughts, very much appreciated.I've found a Tek 2200 series brochure and it lists the following differences: 100MHz bandwidth (2230), 60MHz (2220,2221)4K

I'm sure you can just file a flat even with the shaft installed on the scope. ST <TekScopes@...> wrote:

So it is not a problem with the CRT. When they get old, the trace becomes both dim and less well focused because of lack of emission from the cathode. There is another possibility with the CRT though.

Hello everyone. I was recently given an early 465 scope. It has a trace and seems to work somewhat, but needs some TLC. I'm new to oscilloscopes, so bear with me if I say something wrong. This is an

I'm not sure what the mechanical situation is here, but if setscrew grip is a problem, and the shaft assembly can be taken apart, you may want to grind or machine a flat on the shaft, then use the

That's awesome. I'm assuming the -02 is an updated compatible design so would prefer that version. Ill reply off list with details. Thank you! [TekScopes]" <TekScopes@...> wrote:

Again. I got OCD bad about this. I thought I had a viable glue/threaded insert repair going for my 1A4 var pot, it works well at room temperature but as soon as the scope warms up it loses grip. This

Hi, I have one 155-0049-02 and will check my cabinets tomorrow to see if i have a -01. It would be $15 shiped to lower 48. respond off list to j_massengale@... Jerry Massengale

Hi Mac, Since your response came so quickly, I couldn't resist to answer before going to sleep: Barry describes (part of) his problem as follows: The problem as described by you (Mac) from msgs.