Hi Made Thumbs up for the Beer - im based here in Bavaria where beer is one of the common favorite drinks :-) any news from the repair of the MXS 10 charger? I have the same charger and the same issue - but on mine the diode D4 beside of the FET is as well broken... Did you see anything else broken on the PCB?
Hi Bastian, Unfortunately our politicians have stopped all alcohol sales here in SA. So no beer for me. 😢 I am still waiting for replacement components. The UK is on lockdown, so RS components is not flying anything in. As soon as I get the replacements, I will make a follow up video. In my case, it was only the FETs. Cheers Craig.
Hi Craig; the question is - whats more sad - nor beer or await the delivery of the components.... :-( Just wanna update you on my results until now I replace the FET and the diode on the flyback converter side, and the charger comes to live again :-) But now get the next problem - the flyback FETs get tremendously hot in a couple seconds... I guess the secondary side is shorten - so the FET (IPA040N06N) right beside the transformer in the output side is blown as well... i just took the meter and yes, all paths on the FET are alloyed through.... Will order them and change the as well and tha see whats going on Keep you updated Take care and all the best Bastian
Hi Bastian, I’ve ordered the parts again, they should be here next week. Mmm, if you got the right parts, then you may have a short elsewhere. But that should blow your fuse? If you don’t have the right FET, or your drive circuit is stuffers - they will get very hot because they’re not turning fully on or off. In which case the RDS on is very high and you will have a high power dissipation over the FETs. Hopefully I can make a video on the repair next weekend. Then I can show you some scope waveforms. Cheers Craig.
@@foulkesbrau3085 I ordered exactly the same type..... I guess that the Output FETs are shorten and the primary regulator try to go against the blown FET on the secondary side, which is not enoug to blow the primary fuse? I'll order the FET and will replace it, and i will as well replace the both FETs (030N03LS) right next to the output as they seems to be blown as well.... Its a device from one of my friends, not sure what exactly happens when the charger died - just got it both fuses blown - the primary and the one on the output side.... Cheers mate Bastian
Hi Bastian, You should be able to measure whether the output FETs are shorted. You have to be careful though as you cannot do it with a normal multimeter. You need an LCR meter where you can set frequency if you want to do it in circuit. I will make a note and show this in the follow up. If you have an inductor in parallel, like with an active PFC circuit, you will measure a short as an inductor shows up as a short in DC. Sounds like an interesting problem on your side. Cheers Craig
Hey friend, I want to repair my ctek mxs10. I found that the resistor R4 was blown out. It's the green one next to the entrance fuse. I measured 11-12ohms (R4). The entrance fuse melted trough. So there must be a short circuit. Do you know a solution? Best regards ✌️
HI there, Replace the fuse and measure for a short circuit. If it is still there, you are going to need a bench power supply with current limiting. Set the bench power supply to ~5 volts and limit the current to 200mA. Power the circuit with this. Spray something like lighter fluid on the board and look where it evaporates. That will be where your short is. Cheers
@@foulkesbrau3085 I repaired my mxs10🥳🍻. Alle FETs, a Diode, entrance fuse and the Thermistor R4 were damaged. Now it works great again. I replaced other FETs because the original FETs are very expensive and hard to get. Thanks for your response✌️😊
Hi Made
Thumbs up for the Beer - im based here in Bavaria where beer is one of the common favorite drinks :-)
any news from the repair of the MXS 10 charger?
I have the same charger and the same issue - but on mine the diode D4 beside of the FET is as well broken...
Did you see anything else broken on the PCB?
Hi Bastian,
Unfortunately our politicians have stopped all alcohol sales here in SA. So no beer for me. 😢
I am still waiting for replacement components. The UK is on lockdown, so RS components is not flying anything in. As soon as I get the replacements, I will make a follow up video. In my case, it was only the FETs.
Cheers
Craig.
Hi Craig;
the question is - whats more sad - nor beer or await the delivery of the components.... :-(
Just wanna update you on my results until now
I replace the FET and the diode on the flyback converter side, and the charger comes to live again :-)
But now get the next problem - the flyback FETs get tremendously hot in a couple seconds...
I guess the secondary side is shorten - so the FET (IPA040N06N) right beside the transformer in the output side is blown as well...
i just took the meter and yes, all paths on the FET are alloyed through....
Will order them and change the as well and tha see whats going on
Keep you updated
Take care and all the best
Bastian
Hi Bastian,
I’ve ordered the parts again, they should be here next week.
Mmm, if you got the right parts, then you may have a short elsewhere. But that should blow your fuse?
If you don’t have the right FET, or your drive circuit is stuffers - they will get very hot because they’re not turning fully on or off. In which case the RDS on is very high and you will have a high power dissipation over the FETs.
Hopefully I can make a video on the repair next weekend. Then I can show you some scope waveforms.
Cheers
Craig.
@@foulkesbrau3085
I ordered exactly the same type.....
I guess that the Output FETs are shorten and the primary regulator try to go against the blown FET on the secondary side, which is not enoug to blow the primary fuse?
I'll order the FET and will replace it, and i will as well replace the both FETs (030N03LS) right next to the output as they seems to be blown as well....
Its a device from one of my friends, not sure what exactly happens when the charger died - just got it both fuses blown - the primary and the one on the output side....
Cheers mate
Bastian
Hi Bastian,
You should be able to measure whether the output FETs are shorted. You have to be careful though as you cannot do it with a normal multimeter. You need an LCR meter where you can set frequency if you want to do it in circuit.
I will make a note and show this in the follow up. If you have an inductor in parallel, like with an active PFC circuit, you will measure a short as an inductor shows up as a short in DC.
Sounds like an interesting problem on your side.
Cheers
Craig
Hey friend,
I want to repair my ctek mxs10.
I found that the resistor R4 was blown out. It's the green one next to the entrance fuse. I measured 11-12ohms (R4). The entrance fuse melted trough. So there must be a short circuit. Do you know a solution?
Best regards ✌️
HI there,
Replace the fuse and measure for a short circuit. If it is still there, you are going to need a bench power supply with current limiting.
Set the bench power supply to ~5 volts and limit the current to 200mA. Power the circuit with this. Spray something like lighter fluid on the board and look where it evaporates. That will be where your short is.
Cheers
@@foulkesbrau3085
I repaired my mxs10🥳🍻.
Alle FETs, a Diode, entrance fuse and the Thermistor R4 were damaged.
Now it works great again.
I replaced other FETs because the original FETs are very expensive and hard to get. Thanks for your response✌️😊