Re: Anker 71an7105 Usb power adapter

Agreed. The choice of resistor network has gotten much simpler. If you use the single divider I describe and pipe that 2.8v into shorted D-/D+ pins, 100% of Apple devices will draw their maximum capability, and every Android device I have tested draws their own maximum. In fact, no USB device I’ve ever plugged in - of any type - has ever refused to charge using this scheme. This is all because two critical criteria are simultaneously satisfied:

1) +2.8v is present at both D- and D+ pins, which signals all Apple devices to draw...

Re: CyberPower CP1350PFCLCD - bad caps + ??

Great tip, thank you. Will definitely do this !

Re: CyberPower CP1350PFCLCD - bad caps + ??

CyberPower 1500 AVR here, approx 2010 vintage. Unit shutdown with a slight crack and ARC flash caught out of corner of my eye as I happened to be in the same room when it happened. Took it apart last night and the issues resemble OP issue, as well as two other Cyberpower repair threads I found on this forum. In all cases it seems that the cap next to the Viper chip got cooked / dried-out / & was failed. The Viper chip had to work harder and harder as a result, eventually shorting through the faulty glue. The capacitor (C3 I think)...

Re: Anker 71an7105 Usb power adapter

Nice one 👍.

I have two of those units and they have been great workhorse family chargers. My units slightly predate Apple 2.4A charging so the smart ICs only give 2.1A max. I fixed this by cutting all the traces from the five smart ICs to the USB data pins, solder-bridging each pair of data pins, and jumpering all five pairs together with 30AWG enameled wire over to to a resistor voltage divider which i soldered in amongst the low side circuitry. (I used 43k Ω to +5v, 49.9k Ω to ground, yields approx 2.7 to...