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

Question

[Hello I have a problem with the Hilti C4 / 36-350 charger, viz. The charger blinks green every 2s and does not charge. No reaction to plugging in the battery.

Strumien swiadomosci swia · Accepted Answer

I have repaired this type many times, first see why it burned the path and what it powers.

Strumien swiadomosci swia · Accepted Answer

If there is a short circuit in the power supply, do not be surprised, check these power transistors for a short circuit.

Sniezynka · Answer

It flashes and does not charge because it is in standby mode and is charging on a different battery?

yanes · Answer

The standby status is the diode that is lit with a constant light, flashing on the connected charger indicates problems with the power supply.

Sniezynka · Answer

I mistook it with another model, here is the instruction; Which LED is blinking? There is nothing in the manual about the power supply problems, only the cell temperature.

rsv6 · Answer

It blinks continuously without a battery or with a battery. The description on the charger shows that it should glow after turning on the power. Does anyone have any schematic? Or someone had a similar problem? On the board, I noticed a burned path and jumper J3 with a 0R resistor. Same problem after replacing this item. Before the relay on the capacitors there is 19.5V after turning on the power.

Strumien swiadomosci swia · Answer

But what burns these elements over and over again?

rsv6 · Answer

I wrote a little not clearly. Nothing burns out of the elements now, only the LED is still blinking is not charging.

szon · Answer

A friend of mine had probably given me the same one once. I am not sure because it was a long time ago, but the inverter driver was damaged, the 8-pin system in the first photo. Impregnable deal. This is how companies protect themselves, you have to throw out and buy a new one. I emphasize once again that I can be wrong as to whether it was the same charger but rather it was her.

rsv6 · Answer

How did you diagnose it? Which layout in the first photo?

rsv6 · Answer

You're on the right track From what I saw, it powers the 10pin IC1 L6599AD 10pin is gnd from what I invented in the technical data of the system. I picked up the chip because it has a 45R short circuit between the 10th and 12th pin. The system probably controls the Q3 transistors, Q4 12NM50ND I think 45R on the power pins is checked on a raised chip. This is a bit too little resistance. Can you write what else could go in turn?

Sniezynka · Answer

Sample layout application:

rsv6 · Answer

Thanks, but I have no problem finding the documentation. I am asking for more information about the charger. Possibly from what this system could fall. I checked all diodes and resistors within the system and they are ok. Executive transistors too. Only I am not sure smd short circuit capacitors are not on them. And there is also the Q6 6C1 transistor

Strumien swiadomosci swia · Answer

Measure the tension on pins 10-12.

rsv6 · Answer

There is no short circuit on the soldered ones. The values seem similar on both. Relative to the 3-legged plus. First transistor: minus on 1pin 757mV minus on 2pin 423mV Second transistor: 1pin 707mV 2pin 403mV Added after 1 [minutes]: Can I do it without a deal? Because I don't want to put it back in if it's supposed to be short-circuited. Added after 3 [minutes]: What voltage should there be because I connected directly to the desoldered 5V 10pin- 12+ system and takes 190mA from the workshop power supply

Sniezynka · Answer

The circuit probably fell from too high a supply voltage above 17V, see the circuit on page 30 where it is implemented through a stabilizer on the transistor.
A similar solution may be here.
It takes so much because it has a short circuit of the internal stabilizer.

rsv6 · Answer

Can I run the charger without it? Will I have fireworks. Only if it was a tension do I get thoughts that he has to control it somehow?

Sniezynka · Answer

Unfortunately, without the chip, it will not work properly to replace the chip and to check the power branch, it's like that at the beginning.

rsv6 · Answer

I have already checked it as I wrote above. Nothing to order and check somewhere. Let there be no damage after the second part of the power supply.

Sniezynka · Answer

Remember to run on the service power supply by checking the oscillograms on the oscillator transistors.

rsv6 · Answer

What service power supply do you mean? If I do not give 230V for the input, the converter and control will not start.

Sniezynka · Answer

You supply the system directly from the power supply, and from the 230V network, before soldering the system, you must check the voltage on the leg 12. If you do not check it, the new chip may go away.

rsv6 · Answer

Ok, I should pick up 12pin and give it what voltage? Isn't it better to put a zener diode at maximum voltage?

Sniezynka · Answer

You can insert a 9 to 16V zener diode at 16V later, but I suspect that there is a voltage stabilization system there and if it is out of order, it may still damage the system.
Check if it is realized through Q6 transistor.

rsv6 · Answer

From what I can see the voltage goes from transistor Q3 BCP54 Through the 10R resistor

It is controlled by IC2 MIP2M2
It can be, as "Shon" wrote, that he will be wasted. If so, it is no longer worth fixing it. I will try to run on the new one what the short circuit does and I will know because the second system costs about PLN 50

Sniezynka · Answer

For a Chinese, it costs $ 2

rsv6 · Answer

I do not trust Chinese elements anymore. I ordered Spw47n60c3 about a year ago, there were some fakes with a punctured inscription that did not open completely.

Sniezynka · Answer

I, however, do not follow the price and buy the originals. You have to ask for photos of actual elements from nature and compare with those installed in the device. Not every Chinese is a crook.

NNTFD · Answer

Hello,
I have a similar problem with the Hilti C4 / 36-350 charger.
I have already repaired several such chargers and most often IC1 or transistors were damaged.
I have a case in the workshop that has no damaged transistors, neither IC1 nor IC2 MIP2M2. I checked IC1, there is no short circuit between pin 12 and 10. Moreover, I measured the supply voltage of IC1 during charging and it is 13.7V - ok. I replaced IC1 prophylactically and nothing. 5 seconds after starting charging, the charger turns off. I checked optocouplers and also ok. Any ideas what else could be wrong?

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

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