Electronics > Repair
Fluke 289 not quite sorted.
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purpose:
Hi Frenky,
No progress yet.
Mine shows nothing on the screen, so am thinking mine is failing earlier than yours in the boot process.
To the right of the battery pads is an unpopulated switch pad, marked S2 MSP RST. I'm wondering if this might be something worth exploring.

peter
frenky:
I measured oscillators and there is no signal from it. Weird that power button works if it is connected to the IC with "sleeping" oscillator?

Anyway I made a list of all ICs on the meter. (Attached pdf)
It is very strange that nobody tried to reverse engineer 287/289 in the last 10 years. Or at least tried to identify all the elements on it.
This would help many with repairing their faulty units.
frenky:
Some datasheets from known ICs:

U48: (ADG714) http://www.analog.com/media/en/technical-documentation/data-sheets/ADG714_715.pdf

U26: (MC9328MXS) https://www.nxp.com/docs/en/data-sheet/MC9328MXS.pdf

U19: (LP324M) http://www.ti.com/lit/ds/snosbx6c/snosbx6c.pdf

U16: (AD8617) http://www.analog.com/media/en/technical-documentation/data-sheets/AD8613_8617_8619.pdf

U14: (LTC1968) http://cds.linear.com/docs/en/datasheet/1968f.pdf

U10: (LTC939CS) Voltage Regulators - DC DC Switching Regulators Perhaps similar to: http://cds.linear.com/docs/en/datasheet/15501fa.pdf

U12, U39, U40: (HK4053) Perhaps 74HC4053 https://assets.nexperia.com/documents/data-sheet/74HC_HCT4053.pdf

U17: (PCYI; TPS770) http://www.ti.com/lit/ds/symlink/tps770.pdf
purpose:
Nice digging.
When I was in touch with Fluke, they said they could help with component ident, but a bom might be out of the question.
I'll try my luck.

peter

PS I've just fired of an e-mail.
frenky:
Great. Any info will be usefull.

I might have identified a few more elements:

1AM (sot23) 2N3904
ARB (SC70) TPS715
338 (sot23) NDS338N or BC338
A8L (sot23)  MMUN2234
2A (sot23) 2N3906
A41 (sot23) 1S2836 or OPA364
LTKH (S5) LT1615ES5-1
IL44 (sot23) perhaps BAT54S
A6W (sot23) BAS16
1R (sot23) MMBT5089
EHs (sot23) BCW66H
SS (sot23) BSS138
337 (sot23) NDS337N or BC337
R1E (sot23) LM4041EEM3-1.2
RAD (SC70-5) LM4041
5B1 (sot23) XC6106B032MR or XC9236A11CM
JY (sot23) BAV199
6B (sot23) 2N5484 or BC817-25
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