I have 3 of these for field trips; I use one as part of my coffee/espresso prep, and have never really had issue with these useful power packs, but the S700 has recently started throwing an error code even though it has over 70% power remaining; this happens when attempting to use the AC function; an EO2:04 error appears!
The DC function is fine using the USB and Type C outputs, so does the front 2 LED lights on the left and right of the unit.
Here's a solution I found; I've yet to attempt it, but I've faith it works:
If the screens stops working as well as all the buttons , the unit needs a “hard reset” (you should notice that the usb-c port still delivers power, the battery will also still be charging when connected to mains even if you can’t see it) by disconnecting the XT60 connector within the unit for a few seconds then reconnecting it.
To reset (and please be careful).
- First remove the 4 feet pads from the bottom of the unit to expose the 4 bolts holding the top of the unit in place.
- Use an Allen/Hex key to unbolt the 4 bolts and remove them from the unit. Next, carefully turn the unit right way up making sure to hold the unit together (the top section with the display will be loose but is still connected by a couple of small wires).
- Remove the top carefully and lightly rest to one side of the unit, ensuring all wires remain attached.
- Remove the 4 screws from the corners of the green pcb, that holds all the electrical gubbins, to enable you to move the pcb out of the way to access the XT60 connector beneath.
- There are two connectors under the pcb. 1 larger XT90 connector and one smaller XT60 connector (which will be tucked to the side of the unit), both connectors are labelled on them and will each have two wires in and two wires out. Disconnect the smaller XT60 connector by simply pulling it apart.
- After 5-10 seconds reconnect the XT60 connector, this will complete the reset of the pcb. You should hear a beep or two and see some LEDs on the pcb light up or flash. If this doesn’t happen it’s likely that the battery level is too low so simply plug into the mains, within 10 seconds the screen should come on.
- Once the reset is complete you should be able to test that the buttons and torch work indicating the unit is back to full working order.
- Remove the mains plug (if you needed it) and simply reassemble the unit the same way you disassembled it.
Job done and all fixed. I’ve had this happen at least once on each of my 3 units and in every case I’ve got each unit back to full working order. These failures annoyed the hell out of me early on until I discovered a fix so wanted to share in case this helps someone who has a “dead” unit and isn’t getting any help from customer service or is outside the warranty period.
