I don't know what sort of forum could help me with this question so I thought it worth starting here.
My Nedis video doorbell stopped working when I started charging it.
It won't do anything. It won't enter pairing mode and and the only sign of life is the red LED when I try to charge it. The batteries are charged. When I hold down the button to enter pairing nothing happens.
So I opened it up.
There are 2 PCBs. One has the usb socket and camera and the second has the bell push and PIR motion detector.
On the second PCB an SMD component labelled U1 looks to have blown. When I scrape it, dust comes off.
It has 5 pins arranged 3 and 2 but most of the id numbers have gone, I can only see 3***93.
It's close to a component on the back of PCB marked RT1. That is the only component on the back.
Nedis customer support doesn't exist.
Is it possible to work out what it is ?
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Nedis video doorbell WIFICDP20GY
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DoG
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Re: Nedis video doorbell
I think pics of the pcb will help a lot.
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PhilC
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Re: Nedis video doorbell
Have you tried to see if there are other photos of the doorbell PCB on Google?
If it ain't broke, test it to Destruction.
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rubber_jonnie
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Re: Nedis video doorbell
I'm with Phil and d0g, pictures, hi res of the board will help
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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peters
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Re: Nedis video doorbell
Just a phone pic.
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HigashiJun
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Re: Nedis video doorbell
According to your picture, U1 really looks to have blown.
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rubber_jonnie
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Re: Nedis video doorbell
Looks like U1 is some sort of Mosfet, are there any other similar components on the board that have the same package and have a similar part number? Might be a clue.
Other than that, you might struggle without the schematics to tell you what the part is.
BTW I edited your post so the picture is in line rather than an attachment as per forum guidelines.
Other than that, you might struggle without the schematics to tell you what the part is.
BTW I edited your post so the picture is in line rather than an attachment as per forum guidelines.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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peters
- Posts: 213
- Joined: 25 Feb 2023 20:44
Re: Nedis video doorbell
Sorry, not sure how to do inline.
There is nothing similar on the board but I will check the main board as well.
There is nothing similar on the board but I will check the main board as well.
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rubber_jonnie
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- Location: Essex
Re: Nedis video doorbell
Top right by the screw looks similar.peters wrote: 18 Mar 2025 08:47 Sorry, not sure how to do inline.
There is nothing similar on the board but I will check the main board as well.
To place inline simply place the cursor where you want the image to be in the text field and then in the attachments tab, click on the place inline button:
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Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
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peters
- Posts: 213
- Joined: 25 Feb 2023 20:44
Re: Nedis video doorbell
That one is marked &3KP
Before I scraped the blown one out did have 3 something 93 on it.
Before I scraped the blown one out did have 3 something 93 on it.
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