arnonabuurs
New member
Hi guys I have an 820-3462 with some small liquid damage around these components:
Near Q2620
R2851
L6754
U5360
Q7220
De mac sometimes turned on but most of the time not. After replacing corroded R and clean up corrosion life was looking great. Ultrasoniced the board to get rid of the flux, and now I dont get a light on the charger, bummer. Area around U7000 and DC IN board all looks super clean. I get a fluctuating 16.2 - 16.76 on F6905 and nothing on DC IN at U7000 (pin 2) 15 - 15.52 on pin 1. Parts in the charge circuit all look pretty neat. No short on F6905. PPBUS, PP3V42 atc obviously all 0 as it seems power isnt making its way to U7000. Where to start? Havent fixed many of these yet.
Near Q2620
R2851
L6754
U5360
Q7220
De mac sometimes turned on but most of the time not. After replacing corroded R and clean up corrosion life was looking great. Ultrasoniced the board to get rid of the flux, and now I dont get a light on the charger, bummer. Area around U7000 and DC IN board all looks super clean. I get a fluctuating 16.2 - 16.76 on F6905 and nothing on DC IN at U7000 (pin 2) 15 - 15.52 on pin 1. Parts in the charge circuit all look pretty neat. No short on F6905. PPBUS, PP3V42 atc obviously all 0 as it seems power isnt making its way to U7000. Where to start? Havent fixed many of these yet.