Author Topic: REPAIRED : 2465B - led "A SWP TRIG D" flashing after NVRAM unsoldering  (Read 206 times)

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Offline Joseph Bozzer

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MY PROBLEM :
After unsoldered my NVRAM and installed a IC socket , the "A SWP TRIG D" led begin to flash and all stop
After consulting the troubleshooting diagram and associated tables (thanks MED6753) I found that nothing was to retire of them

FIXING :
following the advice of ALFONS , I tested the socket, pin by pin by lightly scratching the tracks next to them,  and BINGO I discovery a track break ... only one out of 28 .. the tracks are so thin and fragile
After fixing, my 2465B is working again but I have error 04 fail 11
Normal, I had lost my calibration datas yesterday during the NVRAM unsoldered operation ... I don't always know why?
« Last Edit: January 11, 2020, 09:20:07 pm by Joseph Bozzer »
 

Online med6753

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Re: 2465B - led "A SWP TRIG D" flashing... help!
« Reply #1 on: January 11, 2020, 12:49:51 pm »
Page 6-13 of the 2465B Service Manual.
An old gray beard with an attitude.
 

Offline Joseph Bozzer

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Re: 2465B - led "A SWP TRIG D" flashing... help!
« Reply #2 on: January 11, 2020, 01:19:28 pm »
 :-+
 

Offline Alfons

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Re: 2465B - led "A SWP TRIG D" flashing... help!
« Reply #3 on: January 11, 2020, 01:22:48 pm »
This error message occurred to me after I unsoldered the NVRAM and damaged a trace. So this happens when the NVRAM provides corrupt data. After I fixed the error, everything worked.
 

Offline Joseph Bozzer

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Re: 2465B - led "A SWP TRIG D" flashing... help!
« Reply #4 on: January 11, 2020, 02:45:59 pm »

I unsoldered it yesterday and lost my calibration data
Track damaged around the NVRAM? .... yes it's possible because it was difficult to unsoldered ... I will try that .... thanks

« Last Edit: January 11, 2020, 02:47:54 pm by Joseph Bozzer »
 

Offline Alfons

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Re: 2465B - led "A SWP TRIG D" flashing... help!
« Reply #5 on: January 11, 2020, 02:57:56 pm »
I discovered it after I checked everything with a magnifying glass and, of course, measured it.
 

Offline Joseph Bozzer

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Re: 2465B - led "A SWP TRIG D" flashing... help!
« Reply #6 on: January 11, 2020, 03:19:42 pm »
Alfons you are my savior

I tested pin by pin by lightly scratching the tracks right next to them and BINGO I had a very little break ... only one out of 28
My 2465B is working again but I have error 04 fail 11 (no calibration data)

As I already found on my programer yesterday , I lost the calibration data

What will pass if I use an another .BIN coming of a new 2465B out the factory?
(I'm not use this scope in professional domain, just for hobby ... extremest precision is not necessary for me)
« Last Edit: January 11, 2020, 09:21:06 pm by Joseph Bozzer »
 


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