Works correctly now, chrage current around 1A+ and reducing approaching to full charge. Charge controller has no reverse polarity protection designed for it. Seems that the unit was connected with reverse polarity. It's BQ24617 standalone battery charger that's fried, will try to replace.
I disassembled my boombox trying to isolate the problem, well I didn't have to look far, picture attached. AU 256.80 D-Ring Screw Bolt For Logitech Ultimate UE Boom 3 Megablast Bluetooth Speaker AU 13.99 + AU 2.99 postage 2 x Lot Micro USB Charging Port Power Charger For UE Megaboom Bluetooth Speaker AU 14.49 Free postage 2 x Lot Micro USB Charging Port Power Charger For UE BOOM 2 Bluetooth Speaker AU 14. Like its previous iteration, the Boom 3 will last for 15 hours on a single charge. Xtreme uses TI BQ2461X battery charge controller which should start charging if battery voltage is above set threshold and it is not overheated. The charging port is now sensibly housed under a waterproof door at the back of the speaker (instead of the underside, which made positioning awkward if you had a cable plugged in), meaning it can now stand upright while charging. As xtreme does not have any kind of battery gauge, so it's very likely that boombox uses similar system.
I did not manage to find boombox service manual, although xtreme service manual is available. When boombox is off, it draws around 22mA, when I turn it on it's around 42mA, seems like normal standby current, but does not seem to charge, although it turns on and draws battery power as well as it works when plugged in as current draw seem to fluctuate with sound level and goes well into 2amp territory when I crank up the volume. That's about all the advice I can give, as I have no experience with that product and no service manual seems to be available (that I can find anyways). If all of that checks out, it may be time to start digging into the charging circuit, or power management circuit if it's got one (for instance, to lower the charge current while the speaker is being played at high volumes to ensure sufficient power goes to the audio amplifier). Even though it's a new battery, maybe it's been sitting around a little while and is pretty much completely discharged? Charging circuits for li-ion will normally significantly limit the charge current if the cell voltages are below a certain point (very deeply discharged) or imbalanced (in the case of series-connected cells). Does it put out a nice clean 20V relatively free of AC ripple when plugged in to the device? Also, the battery voltage. But I think I might be over thinking that one.First thing I would do: check voltages! Per manufacturer's specs the power supply should put out 20V at up to 4A. I am a little paranoid that they somehow gave me the same speaker back as when they gave me the replacement there was no original box they just handed me a speaker of the same colour. There is no physical damage, never been dropped or gotten wet, nothing that I can see that would affect charge and im going to be annoyed at having to do a second warranty replacement. Buy Ultimate Ears POWER UP Charging Dock for BOOM 3, MEGABOOM 3, BLAST & MEGABLAST Speakers from our Cables & Adapters range at John Lewis & Partners. Brand: Zitel Color: Black Features: Compatibility : Compatible with Ultimate Ears Boom 3, Megaboom 3, Blast, Megablast Bluetooth speaker Protection : There. Is it possible that I've just gotten unlucky and received 2 faulty products in a row? The simplest way to figure 1985 Honda Fourtrax 250 Manual / Emanualonline : 2Boom Bluetooth Speaker. My friends also have UE boom speakers which have no issue charging with the same cords that won't work with mine. micro USB charging cable, and an instruction manual. I had misplaced the original box with the factory cord in it and am wondering if any issue can be caused by charging with a third party usb. Pair up to 8 Bluetooth enabled source devices - Connect up to two source devices at the same time.
Drivers: Two 2 drivers and two 2 x 4 Passive Radiators. I had it replaced under warranty, no biggie, but now I'm having the same issue with the replacement except it won't charge from the getgo. Select the best Sound for different occasions with 4 different presets and a customized tuner. Ultimate Ears Boom 2 Lite Bluetooth Speaker, Wireless, Portable,Waterproof, Shockproof, App Controlled, Connect Multipl.
The charging light won't light up and it wouldn't take any charge at all until it was simply not able to be turned on anymode. Ultimate Ears Boom 3 Portable Wireless Bluetooth Speaker and PowerUp Charging Dock Bundle, Deep Rich Bass, Waterproof, F. Factory reset did nothing, tried different outlets and cords with no success. BOAT portable speakers match your stride, whether on a trek, a beach, or your home Get the best speakers in every budget and size. The Ultimate Ears Power Up charging dock is designed to work with the Blast, Megablast, Boom 3, and Megaboom 3 speakers and each model takes slightly different times to charge on the Power Up. I bought a UE Boom 3 in March, it was able to be charged once and then just stopped working.