HILTI C 7/36-ACS 230V Battery Charger Not Turning On: Fuse F1 & Transistor Q2 Issues

Question

Greetings to everyone, my Hilti C7 / 36-ACS charger doesn't want to turn on anymore. I found fuse F1 blown, and transistor Q2 shorted. Can anyone help me with the wiring diagram?

P.S. Sorry for my bad English.

aronmiso · Answer

Hello, for what do you need wiring diagram? just replace faulty components and try if it works. I would check also at least this big capacitorGood luck

wojtek 9007 · Answer

Hello - the electrolyte is probably damaged, please check. Added after 40 :

teskot · Answer

I recommend reading the thread: The charger is slightly different, but maybe the experience gained during the repair will help you find the right track.

flaviodif · Answer

Hi, Can you please tell me the name code of IC1? Many thanks! 🙏

azaghorth · Answer

It looks like the plastic cover from the big cap is peeling off from the top, this is the sign that the cap needs to be replaced. The peeling may be from the bottom also. Replace that cap too

runingfontteide · Answer

>>19171154 IC1 reventado

azaghorth · Answer

Hello,Check also the resistors near the transistor, especially one that is the shunt (low resistance). Always use a 500-800 Ohm resistor to discharge the big cap before replacing it.

keklikozcan · Answer

Hi I have a problem. When I plug the battery, charger starts, fan works and after 10 seconds charger stops. Did anyone solve this problem? I replaced L6599AD IC and MIP2M2 IC but same. Relay, triac, mosfets, all zener diodes good. Battery is good. Anyone can help me?

zakrouf · Answer

The problem is in the battery charge level measurement line.

audiovideo416 · Answer

>>21639574 zakrouf, I have the same problem. After 10 seconds of inserting the battery, the charger turns off. Even when it's on you can't hear any relay or fan. In standby, the light comes on for 10 seconds and then turns off. In the post you said The problem is in the battery charge level measurement line. What should I check? Thanks, @zakrouf

audiovideo416 · Answer

@zakrouf zakrouf, I have the same problem. After 10 seconds of inserting the battery, the charger turns off. Even when it's on, you can't hear any relay or fan. In standby, the light comes on for 10 seconds and then turns off. In the post, you said The problem is in the battery charge level measurement line. What should I check? Thanks, @zakrouf

michaeljamesromt · Answer

If the F1 fuse and Q2 transistor are both damaged, there is a good chance another part caused the failure, such as a shorted rectifier, capacitor, or power IC. Replacing only those two parts may not solve the problem. It can help to check surrounding components for heat damage or unusual readings first. Have you already tested the bridge rectifier and main filter capacitor for faults?

HILTI C 7/36-ACS 230V Battery Charger Not Turning On: Fuse F1 & Transistor Q2 Issues

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