Hilti C4/36-350 Charger Issue: Green LED Flashing Every 2s, Battery Not Charging

And this is a decent, tester-based description of the condition of individual cells.... Measuring the battery with a dash and a second hand....

Mate, take the pack out of the case, disconnect the electronics from the cells and with a tester that measures the impedance of the cells do their analysis.
Do you have such a tester? If not then, unfortunately, you should put it in the hands of someone who owns one and has the knowledge of how to measure individual cells, how to interpret the result (good-bad), owns a meter and will take measurements on the electronics board, can familiarise themselves with the battery charge control system (BMS).
In my opinion, here no one will be able to solve your problem remotely, just based on the number of glowing dashes. At least I am not aware of such a method to locate the problem in the package.

hello,
would it be possible to know the voltage and functions of the different pins on the output connector?,

thanks

Welcome.

I have an identical patient on my table.
I have taken some measurements around the MIP2M2.

ZD17 shorted - I replaced with a 0.5W 15V Zener diode.

1. 5.83V
4. 15.03 V
5. 309 V
8. 0.89V

Sometimes the charger will start with the LED active - then VCC is exactly 13.09V

Does this behaviour disqualify the MIP2M2?

Hello,
I have a faulty Hilti C4/36-350 that has fallen from a high place. Firstly, I noticed that the big capacitor was gone, then I replaced it but still no signal of life. No LED flash at all.
I have checked the voltage on the transformers and I measure correctly the 300V from the bridge rectifier on the first big transformer, but on the small one I have no tension at all, only 0.5/0.6V.
The diode D5 and the Zener ZD13 are fine, and before the ZD13 I have 300V, but after nothing.
I noticed that when it's plugged to the AC, I measure between pin 5 and 7 of the MIP2M2 static 59kOHM, that from the datasheet found in this forum should be the Source and Drain of the MOSFET that should be swinging from close to open to drive the small transformer (am I correct?), maybe the MIP2M2 is gone? or is it normal?
All around the low power board I have no voltage, so none of the chips are ON, neither the L6599AD.

Hello!
What could be wrong with the charger? The LED lights up, no response to inserting the battery, the fan also does not switch on

>>21516473 disconnect the diode so that it does not light up will be complete in unresponsive

pardon the pun , but if you don't have any experience in measurement and service , you won't fix such a complicated inverter , and don't rummage around in there because you will break even worse .

>>21516473 and did you read the post above yours?.... Do...

Also - all your posts are of the same content and in this topic. Are you stammering or are you mocking?

My charger repaired. In addition to the faulty Zener diode, the 400V capacitor and components around the transformer had cold solders.

Sometimes (as I wrote above) the green diode did not light up or was flickering.
Following this lead it was possible to remove the fault.

>>20872003 Hello! Can you measure the voltage on LED100? My LED is 12.6V and it glows and smokes. Why can the voltage on C111 be 12.6V? And type/nominal/datasheet/markingcode Q127 and Q123

Hi,
I found the problem described in the previous post, after the fall the small transformer probably took a hit and broke the primary wires. The problem is that I can't find anything online by searching for the code reported on the side "Z3M8A", and I couldn't even find a transformer with the same pin number and positions.
Do You have any information on this transformer?
Thanks

My diagnostics revealed a resistance of 30 Ohm between the Vcc and Vss pins of the MCU freescale mc9s08ac48 32pin. Can someone measure the resistance on your hilti c4/36-450? Is it possible to read the firmware from this MC?
For those who may need help - with such a malfunction, the divider chain R111-R112 and ICU101 does not work. As a result, the optocoupler PC5 is completely open and instead of 8.4 V on the low side of t2 c111 there is 12.6 V

Trying to repair, changed L6599 just to find out that command for starting comes from PC4. Everything seems ok, steady green LED, 8.4V present, 11.5V present but no start. After connecting my bench power supply to imitate output of main power supply, system starts, relay clicks, fan starts. battery charging. If I short BCP54 that starts L6599 there is no green LED. Any idea?

This is 2400dpi scanned PCB on EPSON 1680. It can be useful do download full resolution image.

Did a bench supply of l6599, 12.5v vcc, resistor divider to pin 7 for 2v, simulating line voltage present. Now scope shows triangle wave on pin 3, outputs working. Still thinkering.

if anyone is looking for mip2m2 and 1r0 resistors, I have them in stock and am willing to share