Keithley 2700 component identification

[Ordinaryman1971]

Hello, I've got a Keithley 2700 multimeter from usual place with some problems. This is the first one of those I've ever looked at. It doesn't take any meaningful measurements on any range.... tough spot.
I wanted to first deal with obvious. When I've opened the meter I've found two components that are definitely burned out.
There is a resistor and I guess capacitor that are smoked.
I'm attaching some pictures for your entertainment.
Maybe somebody out there has idea what I can replace it with.....
I've tried to run the test... like Kei2000 but it looks like I can't find the option to run the test... not sure what's wrong with it but I'm getting calibration (the calibration count, dates, run... display test and key test.... am I looking in a right spot....
I'm getting a 520 error at the start but it looks like it's related to the setting on the acquisition card, still don't know how to resolve it. I've tried to restore default setting but again.. it doesn't like like it's the same as Kei2000...

[Ordinaryman1971]

It looks like when I short the burned out resistor with my trusty tweezers the resistance measurements are right on the money... almost.
So, this is the first measurement I can actually see that's in any way meaningful.

[fzabkar]

Here is a service manual:

https://elektrotanya.com/keithley_2700_sm.pdf/download.html#dl

R196 is a 2K, 1%, 125mW, metal film resistor.

R298 is a 1K, 1%, 100mW, thick film resistor.

I would think that the adjacent semis would be suspect.

[Ordinaryman1971]

Thank you. I’ve got rid of an error 520, meter uses saved configuration “save0”, I’ve had to save the new configuration and the error went away.

[Ordinaryman1971]

I found two transistors that are blown the Q114 and Q136 the marking on them says (132), in the manual it says... TG389, I wonder where can I find those.
Another one that I need is CR116 dual diode, marking on it is (C2Y) RF-95, HSM-2822T31.
And of course the resistors... R298 1K and R196 2K.

[fzabkar]

Could the C2Y be a HSMS2822? This dual Schottky diode has a marking of C2x, where x is the date code.

http://www.redrok.com/Diode_Schottky_HSMS-282x_1pF_100pS_12O_0.34V_-15V_AVAGO.pdf

Edit:

Page 109 of the PDF states that CR116 is a BAV99L dual switching diode.

https://www.onsemi.com/pub/Collateral/BAV99LT1-D.PDF

Q114 and Q136 are n-channel JFETs, SNJ132199.

The same transistors appear on page 6 of the following circuit diagram:

https://xdevs.com/doc/Keithley/2000/K2000.pdf

Edit #2:

http://dedius.free.fr/index.php?post/2014/11/06/Keithley-2000-repair

Q104 may be an MMBF4393LT1, but I would like to verify that. After hours of serach, I find that Interfet has a process called NJ132 (hence the name given by Keithley !), and that process is used to manufacture 2N4393 according to interfet (nj132_interfet_process.pdf

http://dedius.free.fr/public/Bricolage/KEITHLEY/nj132_interfet_process.pdf


http://bardagjy.com/?p=1167

According to the parts list, Q108 and Q109 are both listed as “TRANS, N CHANNEL JFET, SNJ132199(SOT-23)”. So Google only produces this thread. According to this post, Keithley also suggests

Interfet SJN132280
Fairchild Semiconductor 5149B51374A
Fairchild Semiconductor 5149_NB51374B

MMBF4391L, MMBF4392L, MMBF4393L JFET Switching Transistors, N−Channel:
https://www.onsemi.com/pub/Collateral/MMBF4391LT1-D.PDF