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Confusing resistor package size choices in Fluke 289
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gamalot:
I believe the 189 II is the exact same thing as the 289, except for the model number. I don't know where people get it from, but it showed up on the forums and matches the circuit of my 289.
TimFox:
I do not know the exact circuit of the Fluke 289.
However, for critical applications a larger package is preferred either for self-heating or voltage co-efficient of resistance (important in a voltmeter).
(During my career, I had to beg the PCB designer to allow a 1206 package for critical resistors, when the usual company default was 0603.)
mpeters3:
Hello gamalot and all,

Does anyone know where I can find a replacement piece, new for this LCD connection point "J3 LCD" on this PCB that has been damaged that I am going to attempt to fix. see pic. As you can see its mangled pretty well from someone. Not me. I am just the attempting fixer. A part number and source supplier would be helpful if anyone knows whom to purchase one from. Does fluke sell parts such as this to the public? I can hear it now, you're :-DD :-DD :-DD going to attempt to fix this.... :-DD :-DD :-DD :palm: :palm:. Well, I figure I fix cars, and I have worked prior as a solder tech for Pegatron fixing modems. Let me know, I appreciate any feedback. If I can barter car questions for my green newbie motherboard repair questions I'll do so. Best I can offer via forum pages. Thanks in advance.
Mpeters shalom, shalom. :popcorn:
gamalot:

--- Quote from: mpeters3 on October 04, 2024, 01:15:39 am ---Hello gamalot and all,

Does anyone know where I can find a replacement piece, new for this LCD connection point "J3 LCD" on this PCB that has been damaged that I am going to attempt to fix. see pic. As you can see its mangled pretty well from someone. Not me. I am just the attempting fixer. A part number and source supplier would be helpful if anyone knows whom to purchase one from. Does fluke sell parts such as this to the public? I can hear it now, you're :-DD :-DD :-DD going to attempt to fix this.... :-DD :-DD :-DD :palm: :palm:. Well, I figure I fix cars, and I have worked prior as a solder tech for Pegatron fixing modems. Let me know, I appreciate any feedback. If I can barter car questions for my green newbie motherboard repair questions I'll do so. Best I can offer via forum pages. Thanks in advance.
Mpeters shalom, shalom. :popcorn:

--- End quote ---

It's hard to tell what model Fluke used, but I guess most straight mounted 1mm pitch FPC connectors should be suitable as a replacement.
coromonadalix:
the best would be to find some 20 pins connector with the right pitch on a small pcb  and grossly  add wires to it,  because on the main pcb  you dont have side tabs  to help / hold the connector,   pcb traces are badly damaged

you would need to work with thin wires, use uv glue, scrape the top wires if they have varnish,  and try to solder another connector on top of everything ...  IT IS repairable but ...  tedious job ahead

picture attached,    but minus the 0.1" idc  connector,  you have many on ALI ......  with different pitch ???
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