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Re: 2465B which are my options for the SRAM "problem"? low serial with OPTION 5:)
Thanks Ozan, area looks different. So it was indeed a 2465 manual, just not the "B variant". That explains why I was never able to find such a panel on a 2465B on the internet. Yes I
By Giuseppe Marullo[iw2jww] · #208884 ·
Re: 2465B which are my options for the SRAM "problem"? low serial with OPTION 5:)
Forgot to mention my scope is above 50K SN. Here are the links I have on file: Hope they still work, Mouser's AI is once again blocking me on this browser for being "outdated" and probably not being
By Alex · #208883 ·
Re: More 2465B SRAM Trouble
pac1085, I copied the original 1991 SRAM data to buffer, then put it on the new SRAM. That generated the 04 Fail. I then put the 1991 SRAM back in the A5, it also failed. The data had been changed
By Ron Jones · #208882 ·
Re: 2465B which are my options for the SRAM "problem"? low serial with OPTION 5:)
Options manual at https://w140.com/tekwiki/images/f/f9/070-6861-01.pdf and my 2465B with option 9 (CTT/WR) shows "A/B TRIG" That picture doesn't look like a 2465B. Timebase knob and trigger area
By Ozan · #208881 ·
Re: Hello/Tek 547 issues.
To second that I can add the fact that any crt TV will behave like this: EHT too low will produce "picture too big" whereas EHT loo high will show a reduced picture size. Was very common to deal with
By Joe · #208880 ·
Re: 5L4N manual (not 'interim')
Thank you -I obviously had an early download. This versn is much more helpful, especially as it shows how to put the bits back together (all those screws !!) Thanks again. Tim [email protected]>
By Tim Phillips · #208879 ·
Re: Hello/Tek 547 issues.
I guess a simple explanation would be that the higher the accelerating voltage is, the faster the electrons go from the gun to the screen, and spend less time passing the deflection plates, therefore
By Joel B Walker · #208878 ·
Re: double traces/lines in tektronix 577 curve tracer
<Space> John
By John Hancock · #208877 ·
Re: More 2465B SRAM Trouble
Ron, Well I have used my GQ4x4 for many years and it works fine for me. But you shouldn't have to keep heating your solder joints if you had quick solder flow on each pin. Seems strange that the
By Craig Cramb · #208876 ·
Re: double traces/lines in tektronix 577 curve tracer
I remember frying some diodes during lunch on a brand new 575 in a class. Teacher walked by and said what are you doing? I and classmate said burning up some diodes. Good, good, he said, knowing we
By John Hancock · #208875 ·
Re: More 2465B SRAM Trouble
Not sure what you mean regarding the accessory boards/widgets. This is the exact package I bought: https://amzn.to/3DBlYq9 I bought the one with the extras since I wanted them for other things in the
By pac1085 · #208874 ·
Re: Tek 2236 Control Button Error
Well... Not a cleaning problem. Actually a broken actuator inside the "CH1V" switch section, it was the internal actuator position that was unreliable, not intermittent contacts. So, it will be
By George Werl · #208873 ·
Re: 2465B which are my options for the SRAM "problem"? low serial with OPTION 5:)
Hi Sigur?ur, Yes, but according to the manual,should have a different designation, not "A/B TRIG" but "A/B MENU", also B TRIG options seems different. It is almost impossible to tell if there is a
By Giuseppe Marullo[iw2jww] · #208872 ·
Re: Tek 492 Y axis failure?
Hi again. To finish off this thread. For whatever reason, the 'spare' CRT damaged the video board, revealing that the CRT is dead and may well have been why the 2nd 492 had been stripped down
By James55 · #208871 ·
Re: More 2465B SRAM Trouble
Craig, no joy with the EXER 03 sequence, tried it a couple times. Same error - 04 Fail. I did notice when I clear by pressing A/B TRIG, I get 4 CRT lines and gibberish on the bottom of the
By Ron Jones · #208870 ·
Re: More 2465B SRAM Trouble
May not be related but I had a lot of trouble with the GQ-4x4 and my 2467B when replacing the Dallas chip. I went with the GQ since I watched a YouTube vid where someone used one successfully with a
By pac1085 · #208869 ·
Re: More 2465B SRAM Trouble
Ron, Try this exercise to see if this clears up your issue. Its a specific button push in the correct sequence. CYCLE ERROR CLEAR (Exerciser 03). This routine provides a way for the operator to
By Craig Cramb · #208868 ·
Re: 5L4N manual (not 'interim')
Hi, The manual doesn't look like the "interim" one: https://w140.com/tekwiki/images/8/81/070-1733-00.pdf They've updated the pdf file I guess. I also have the pdf from Artek, it looks
By Ke-Fong Lin · #208867 ·
More 2465B SRAM Trouble
I bought a no error codes on startup S/N B057443. Inspection of A5 showed no leaking of the SMD eCaps, but the Dallas DS1225Y was 1991 vintage by date code. I bought a new Dallas DS1225AB-200+ from
By Ron Jones · #208866 ·
Re: double traces/lines in tektronix 577 curve tracer
It’s the effect of internal capacitance in the device and/or heating/cooling of the semiconductor junction.
By Dave Voorhis · #208865 ·