DIY Parkside Charger Repair: Fixing PLG 20 A1 with LED Issues & Photos Included (90 chars)

Hi! My Parkside charger does not work anymore, the LEDs do not turn on at all and it does not charge. It would be nice if I could repair it myself. Could someone help me do this? I attach some photos with the charger. Any advice/instructions is welcome! Thanks!

Start by checking if the fuse F1 3.15 A is not blown (multimeter set to a continuity tester, of course, measurement with the charger disconnected).

E8600 wrote:

Start by checking if the fuse F1 3.15 A is not blown (multimeter set to a continuity tester, of course, measurement with the charger disconnected).

Thank you for your reply! I checked the fuse and it has continuity, so it's not that... Any other suggestion?

Next, check the main control transistor on the heat sink and the optocoupler. It is also worth looking at the solder pads to see if there are any cold solders anywhere.

I have the same problem, with the same model. Did you manage to fix it?

Then it would be time for live measurements (CAUTION). Is there 230V AC on the cable to the board? Is there about 300-350V across the capacitor (the largest one)?

I have the same issue, but I have found part signed Q3 is blown. Does anyone know the type, please?

Thank you in advance.

NCE4953
1XKD5

I`ll approach you and ask for identification. Probably converters, (signed as 30642). In my case and in your case it is in a SOT23 housing with 6 legs. For me it`s signed on the laminate as U1, and for you as IC1. After desoldering the C23 capacitor on pins 1 and 4, I still have a short circuit. The SR4N60 transistor is functional, the SCHOTTKY 200V 5A SB5200 diode was replaced because it was short-circuited. The optocoupler is operational.

Hello, I will add to the topic whether anyone has managed to decipher the converter as ic1/u1?
I have two chargers that need to be repaired and the system has the symbol Q2RF, I can't decipher what type of system it is. Maybe someone can help?

After reading several topics on the electrode, I bought the SG6859ATZ chip from a Chinese guy, which turned out to be a replacement and the charger works. It seems that this system is a replacement for my AAJ system, my system with the number 30642 in SOT23-6 and probably many Parkside chargers. Also install SG6859ATZ unless you are from the Rzeszów area, I will provide you with art for free. I installed this system in the Vander VWA718 charger. - I noticed that most of these simple ones are made similarly...

Thank you for your reply. According to your advice, I have purchased (still with us) this circuit. But it continues to torment me and keeps me up at night. After replacing the mosfet with a replacement 2SK1117, (isolated from the heatsink), the driver also went on swap, I also replaced the standard burnt 2 ohm resistors around the mosfet. No other low values in the measurements I noticed, (I have a second charger to check), the diodes at the transformer are working, the Schottky diodes and the whole secondary side is working. I don't know where to look next, and firing this set of components even through a light bulb will happen. Maybe someone can give me a hint to at least fix for knowledge and experience 😃

The board after soldering the burnt components.





Hello, I managed to get one working. However, I have a question for you guys on how many volts is that marked zener diode. Maybe someone could open their charger and take a look at this element😀.
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sebcio1991 wrote:

How many volts is that marked Zener diode.

There is no marking on the charger in front of me. I have measured the voltage on it and it is 14.8V. I came across the thread precisely because I also have one to fix. I have replaced the MOSFET transistor Q5 and have yet to replace D4.
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See first fuse BR1

Hello, I have this problem with this Parkside PLG 20 A1 charger, namely the red LED does not go off when charged and the green LED does not come on. I don't know if it is charging at all. Please help.

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Just now while charging the battery it banged, after taking apart burnt components as shown in the picture.Please identify.
From what I see in earlier posts, R21,R22,R23 are each 2ohms but I don't see the value of R24.