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Search: Posts Made By: braxton
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-15-2021, 12:12 PM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

Those contacts are soldered well on the opposite side of the board, and continuity from both sides of the board to the relevant connection points is good when tested with a multimeter.
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-14-2021, 09:06 AM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

I tried to take better photos of the board.
I also measured all of the resistors on the board and all seem to give an ohms reading (Highest was 100K and none seem to be open as far as I can tell).
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-13-2021, 05:32 PM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

Replacing the 2 chips had no effect. Still dead.
What about this component (largest chip in the corner) in the attached photo?
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-12-2021, 09:45 PM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

The sot23-5 chip is hard to read but it looks like GX3mD maybe?
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-12-2021, 09:35 PM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

R24 resistor has 753 written on it and tests at 75.5 Kohm
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-12-2021, 02:21 PM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

Thanks!
Ordered a few of those and the MBR20200CTP (200V instead of 100V)

Hopefully that will get the trimmer working again...
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-12-2021, 09:46 AM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

Based on a closer look at the blown chip, it looks like it is an Infineon IRL3705Z mosfet.
Digikey lists it as obsolete.

Can anyone help out finding this part or an equivalent?
Thanks.
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-12-2021, 08:51 AM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

Here are photos of the trimmer with the model number.
The board is from inside the handle part.

The board is not from the battery itself.
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-10-2021, 09:17 AM
Replies: 20
Views: 2,067
Posted By braxton
Re: Black and Decker 40V Lithium weed trimmer PCB board damage

Thanks. I will keep that in mind when ordering the D6 component.
Any idea what Q5 is?

I am attaching two more photos of the board
Forum: Troubleshooting Game Consoles & Other Weird Devices 08-10-2021, 08:56 AM
Replies: 20
Views: 2,067
Posted By braxton
Black and Decker 40V Lithium weed trimmer PCB board damage

I have a Dewalt / Black and Decker 40V trimmer model LST136 Type-1.

It stopped working. Trimmer motor tests fine. I opened it up to find that the controller board had a blown component at...
Forum: Troubleshooting TVs and Video Sources 07-20-2020, 09:07 PM
Replies: 0
Views: 905
Posted By braxton
Bell 9242 satellite receiver - green vertical lines using HDMI

I have a Bell 9242 HDPVR satellite receiver that has a strange HDMI problem. See attached picture. The green vertical lines only occur using the HDMI output. The component output is fine. Already...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-16-2020, 08:43 AM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

Thanks budm for helping me identify the parts that needed replacing.:cheers:
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2020, 07:30 PM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

Well it's working fine and charging with my franken-parts installed.
I am debating whether I should even order replacements. I suspect the cap and resistor will be fine; less sure about the fet...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2020, 01:08 PM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

I salvaged a 0.22 ohm resistor, 417pF 2KV cap and a 12N60 fet from some scrap boards, and got the charger to come to life with the lights lighting up and no bangs or poofs of smoke.
Probably will...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2020, 09:51 AM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

would this be a suitable resistor replacement?

https://www.digikey.ca/en/products/detail/RSMF2JTR180/RSMF2JTR180CT-ND/9770273?itemSeq=332340179
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2020, 09:41 AM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

Its possible the U9 chip might have the following written on it:

28600D
96M
A6N2
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2020, 07:34 AM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

Also, the mosfet was tested after removal from the board, and was shorted on the outer pins.

In the you tube video I posted in the first link, in the comments section, someone indicated they had...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-15-2020, 07:27 AM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

I tried gently scraping the coating off and using alcohol on the U9 chip but still could not read anything. At one point I thought I could read the number 28 but not sure.
Here is a picture of the...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2020, 11:45 PM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

Resistance reading on two outer pins of the fet is 1.4 ohms- same reading when I touch two leads of multimeter together.
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2020, 11:38 PM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

I’ve attached a few more pics of the resistor I tested. Shown with yellow arrow from the top of board and purple x’s from the bottom. Yellow x’s and red arrow on bottom of board are the location of...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2020, 10:24 PM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

The mosfet is 18n65. I had to remove it to get the number.
There is no continuity between the center leg and both outer legs.
But there is continuity between both outer legs on the fet.
...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2020, 09:25 PM
Replies: 20
Views: 5,247
Posted By braxton
Re: Ego 56V battery charger dead

The Cap was blown pretty badly so could not read what was on it. I think it might have been a 2.2nf 1KV cap. I replaced it with a 2.2nf 250V cap but still no life from the charger. It does not appear...
Forum: Troubleshooting Power Supplies and Power Supply Design 07-14-2020, 09:47 AM
Replies: 20
Views: 5,247
Posted By braxton
Ego 56V battery charger dead

I would like to try to repair an Ego brand standard 56V battery charger. The model number is CH2100.
There is a brief YouTube video on it here:
https://m.youtube.com/watch?v=2cYAKUuVgUE

The...
Forum: General Electronics Technical Discussion 07-03-2020, 04:57 PM
Replies: 16
Views: 1,768
Posted By braxton
Re: Anyone Work on Neato Robotic Vacuums or Know about Lidar?

Thanks for making me aware of the static sensitivity of this mosfet.
Forum: General Electronics Technical Discussion 07-02-2020, 08:23 AM
Replies: 16
Views: 1,768
Posted By braxton
Re: Anyone Work on Neato Robotic Vacuums or Know about Lidar?

Yes I did that already. Those two pins on the mosfet are shorted (actually 40 ohms resistance). The 3 connections on the board are not.
Showing results 1 to 25 of 115

 
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