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Electrolux Ergorapido Lithium powered Vacuum cleaner.

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Turnip:
Hi folks,

Got one in where the 15A SMD battery fuse had popped - Replaced it and now the battery doesn't charge as the chip controlling the motor appears S/C so motor in circuit all the time.

Chip is a five pin (four pin plus tab) SMD device, but can't read anything as board has been sprayed with a plastic coating to prevent water damage. Know if I try scrape it off I won't be able to read anything - Tried before and it never works.

Wonder if anyone has thoughts ? - Thanks - Chris.

astracat:
hi turnip
does the panel look like this
https://www.huoltopalvelu.com/Electrolux-ErgoRapido-LI-ION-18V-PCB
regards
astracat

also check thttps://www.consumerreports.org/cro/news/2009/03/electrolux-recalls-320-000-cordless-vacuums-with-faulty-batteries/index.htmhis

Turnip:
Hi 'Cat' The very one.

Managed to discover S/C chip is PSMN017-60YS a N-FET and cheap on Ebay - Thanks - Chris.

astracat:
hi turnip
nice find ,fingers crossed nothing else kaput
regards
astracat

Turnip:
Hi 'Cat'

Got a pack of 6 from Ebay, so fitted one. Had drained the lithium cells over a few hours, as shorting the 15A fuse caused the motor to run, and I couldn't otherwise stop it.

Upshot was that guess the vac 'brain' assumed totally discharged cells indicated a problem so didn't try charge 'em. Guess it cuts on low batteries well before they're totally discharged.

Powered it up on the workshop supply and got it gently to 16v where the charger took over flashing three Leds out of four.

Suspect the fourth Led significant, but three Leds are still flashing so dare not press the Go button 'till I get the OK.

Machine also has a brush motor driven by another chip.

Had a Vax yesterday where the brush belt was broken, and as it had no brain, repair was nifty - Chris.

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