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Author Topic: Fluke 5500A Multifunction Calibrator: Short Teardown  (Read 4786 times)

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Offline Echo88Topic starter

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Fluke 5500A Multifunction Calibrator: Short Teardown
« on: February 21, 2018, 06:04:53 pm »
Today i had the chance to take a few photos of a defective Fluke 5500A which we have at work. I couldnt find the error and will reassemble it tomorrow, so it can be repaired by Fluke. So if there are any needs for more photos of a particular board say it now. Enjoy.  :)

Outer case photos and manuals can be found here: https://doc.xdevs.com/doc/Fluke/5500A/ Also pictures of the Keyboard Assembly, which i didnt take photos of.

Time limited repair attempt failed, but heres the repair-thread: https://www.eevblog.com/forum/repair/fluke-5500a-startup-error/

« Last Edit: February 21, 2018, 06:38:30 pm by Echo88 »
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Offline Echo88Topic starter

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Re: Fluke 5500A
« Reply #1 on: February 21, 2018, 06:06:27 pm »
The reference on A6_2 shows the LTFLU-1ACH flying in the breeze, they didnt even bother to squeeze it in a heated enclosure. Of course its sufficient to this mediocre class of calibrators but it kinda hurts to see.
« Last Edit: February 21, 2018, 06:18:15 pm by Echo88 »
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Offline Echo88Topic starter

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Re: Fluke 5500A
« Reply #2 on: February 21, 2018, 06:13:06 pm »
All in all it was interesting to disassemble it, but of course it doesnt come close to a Fluke 57XX Calibrator with all its shielding and TaN-Resistornetworks.  ;D
« Last Edit: February 21, 2018, 06:21:22 pm by Echo88 »
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Offline TiN

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Re: Fluke 5500A Multifunction Calibrator: Short Teardown
« Reply #3 on: February 22, 2018, 12:14:43 am »
Thank you for photos.

LTFLU in these is very same REF as used in Fluke 8842A, even resistor is same ;).

« Last Edit: February 22, 2018, 04:19:32 am by TiN »
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Offline dl1640

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Re: Fluke 5500A Multifunction Calibrator: Short Teardown
« Reply #4 on: February 23, 2018, 12:48:49 am »
Looks A6 was repaired, residual flux on U45.
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