UPDATE! 2022/08. Updated component list is up.
Contains almost all components on PCB
You can download it here, or down in article.
So I have this friend who is in construction work. He uses a lot of power tools, especially blue BOSCH akku tools.
One day he mentions that he just bought new GAL1880CV charger. He also said that he has about five of the same chargers that are not working.
As things go, I now have 5 GAL1880CV to repair and I also borrowed that one good charger to use for part database as some of the components were unrecognizably burned.
After I examined all five units it seems they all share the same problem. Standby power supply part is burned in all of them.
In my humble opinion the main culprit behind the problem is transistor Q1, CS1N80 A1H in TO92 case.
As this original component is quite hard to obtain I found a replacement HFU1N80. This unit comes in I-PAK case and it fits the PCB with minimum adjustments.
Damaged components differed through all five units. Some had more burned components than others. But after all the repairs, these were the ones that needed replacement:
| position | value | size/case |
| R7 | 82k | 0805 (2012) |
| R8 | 30R | 0805 (2012) |
| R12 | 390R | 0805 (2012) |
| R13 | 6R8 | 1206 (3216) |
| R14 | 4R7 | 1206 (3216) |
| R15 | 4R7 | 1206 (3216) |
| Q1 | CS1N80 A1H | TO-92 |
| Q2 | PMBT3904 (W1A) | SOT-23 |
| V4 | 1N4148W | SOD123 |
Component list can be downloaded: here
I also took few pictures of the new charger for future needs:
Exceptional work my fellow enthusiast. I must say, Bosch has one of top quality tools and it is nice to see someone trying to upgrade components for longer usage.
Best regards, fellow blogger
Малко помощ и от мен.
https://drive.google.com/drive/folders/1owov0P7F2UOEXHWAxNQ8Q3riZkE1Q1WE?usp=sharing
thanx for your beatiful sharing
Подскажите R65 и r53 какие это резисторы? не могу заказать ..
Hey Максим, R65 = 20kOhm, R53 = 4,7Ohm
Супер., Буду искать
Дякую, дуже вчасно та актуально.
do you have the values of C101 and C102
in R13 what is R?? in 6R8
Hi Mauro,
Sorry but for some reason i missed your comment 🙁
Values for C101 and C102 are: 1nF in SMD case 1206 (3216).
R in 6R8 is Ohm. So that value is 6.8 Ohm
Hello. I have the exact same BOCH GAL 1880CV charger that has broken down. The battery light is coming on slowly. If you have the schematic of this circuit, I would be interested in having this document. Sincerely
Dear Martin.
I am sorry but I don’t have a schematic for any Bosch charger. All the component info that is on my site was measured by me from a physical device.
Kind regards,
Lajt
Hello, thanks for offering your experience.
Do you have a source for buying HFU1N80 or CS1N80?
Tks.
Wulf
Hi,
I got HFU1N80 from aliexpress.
Kind regards
Merhaba CS1N80A1H bulmak imkansız gibi nirşey ama HFU1N80 nereden temin edebilirim.
Saygılar.
Hi,
I got HFU1N80 from aliexpress.
Kind regards
hey man, thanks for that blog entry!
Its also hard to find a HFU1N80. Do you have alternatives for this component?
Not at the moment, no.
But it seems to be an issue so I will look into it and try to find a solution.
p.s. I got mine HFU1N80 from aliexpress.
Kind regards
Thanks for the reply. Looking forward if there is a solution.
Greetings…
I used IPU80R4K5, easy available at http://www.tme.eu.
Excellent.
Thank you for that information.
I have used 2SK3215. Think that similar transistor would work as well.
Hi Lajt !
Thanks for sharing your experience !
How did you go about removing the protective varnish that covers this PCB ?
Difficult to make measurements on the components.
Michel
Hi Michel,
I use a Lacquer thinner.
In my country it is also called “Nitro” Lacquer thinner.
Just a cheap, universal, type (not for oil based colours).
It works wonders.
Cheers
Hello,
Is there a way to change the input voltage from 110V to 220v?
Thanks
^^ To make it work with 220v instead of 110v
Hi Shlomi,
Unfortunately no. This charger is built for one input voltage (region) only.
It is not a dual power device and doesn’t have any option to be converted.
Only solution would be conversion transformer (230<->115V)
Thanks, I have found manuals for the 1820 charger to be converted into 220…
Hello. I would be curious to know the values of C3 and C4 which drives Q1? Sincerely
Hello. I would be curious to know the values of C3 and C4 which drives Q1? Sincerely
Hi Martin,
C3 = 1nF
C4 = 10nF
Both in 0805 (2012) size
Regards, Lajt
If anyone has a service manual on the manifestation of defects, I would like to help me by posting the list of manifestations or even the manual here. Not having the scheme of this device, maybe I can solve the problem I have.
Thank you
Do you know what is marked with “N1”. Thanks in advance
Hi Nikola,
N1 = SMD marking = GA1 = AZ431A in SOT23
Dear Lajt,
Thank you really much for your quick response.
If i could ask you one more question and i will pay a beer 🙂
What is 8 pin chip neer to R55?
The other two ICs on that side are “HR1000” and “324a” i don’t need MCU.
Thank you for your time.
No problem 🙂
Chip you are looking for is MP6922 in SOIC8 case.
Cheers
Hello. I would be curious to know what is marked by N1. Thanks
Hi Pera
N1 = SMD marking = GA1 = AZ431A in SOT23
Hi,
Great information!
What value are the two large capacitors?
On a 110v device, If they will be replaced to with the right ones… wouldn’t it work on 220v?
Thanks,
Lior
Thank you for your question but I don’t have 110V unit so I can’t give any advice on it.
Sorry
Hello, dutch user here, do you know the output voltages of the transformers ? De numbers tr1 tr2 and L2. ? In partslist you call them EMI Transformer,
Standby Transformer
,Main Transformer.
Thank you in advance.
Gracias colega bendiciones 🙏 Dios esté contigo
You’re welcome.
Thank you for this post. It helped me repair my GAL 1880 CV. I used BUK444-800 as a replacement MOSFET (around 1EUR here in Belgrade). Hvala puno!
I am glad it was helpful and thank you for the transistor option.
Lijep pozdrav
Tthank you !
Fantastically ! You helped a lot of people, including me, to try to fix that battery charger. Greetings from Croatia !!!
You are very welcome. And thank you for the feedback. Pozdrav iz Zagreba
si può usare al posto del cs1n80, cs1n60 comprato su aliexpress e funziona benissimo
Grazie.
you can use it instead of the cs1n80, cs1n60 bought on aliexpress and it works great
Excellent, thank you for the information.
Super encore merci pour ton partage changer les éléments grillés et c’est repartie 👍👍
You’re welcome 🙂
Sometimes the small transformer burns out. unobtainable,
On the new Bosch Amp Share battery chargers, instead of the CS1n80 to92, it mounts the 1Nk80z SOT-223/DPAK/IPAK, it is easily found on Aliexpress
Thank you for the info.