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A2681 820-02536 no power

H

hgoncalves

Active member
Hi.

Hi have an A2681 820-02536 with no power.

It has only 4.90V and 0.40A on ampmetter.

I don't know were to start, but on a superficial analisys I found PAVDDN_SDG_R has OL on diode reading, when PAVDDP_SDG_R has 0.562

RR005 = 0 ohm

Can you help?
 
H

hgoncalves

Active member
Sorry.

No history. Client said it just stoped working.

PPBUS_AON = 6.72V
PP3V8_AON = 1.590V

PP1V8_AON = 0V and 0.352 on diode reading
PP1V8_AON_MPMU = 0V
PP3V3_S2_LDO = 1.1V
 
H

hgoncalves

Active member
Hi,
Sorry...

Diode readings:
PPBUS_AON = 0.582
PP3V8_AON = 0.345

L8430 is overheating. However, I don't have any other similar board to use another one.

Where can I find it on other models, or can you plase send me a link to buy them new?

Can you help with this?
 
H

hgoncalves

Active member
Hi,

It seams U8100 is also burnt (it's heating, after L8430 replacing).

Were can I find new U8100? Can I use used ones from donor boards?

Tks.
 
H

hgoncalves

Active member
Hi.

I'm sorry for the question, but I realy don't know the anwser.

Can I replace it for a different donor board, or buy them on Ali?

Tks
 
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