Hi Folksof 220v to 15v) was blown. I've been able to replace the power supply board and had to replace some components (mainly a few ferrite beads and a resistor or 2, if I remember correctly) on the main PC board of the intercom unit itself as well. After that
I have a COMMAX DRC-4L Video doorphone camera that isn't working anymore.
This is part of a faulty Commax CDV-43k/DRC-4L (Stock Code: PI-1176) intercom that I basically got for free. I think something must have shorted or gone wrong as the power supply board of the main intercom unit (CDV-43k) itself (converting wall power
Long story short, once I remove the camera unit completely, I noticed 2 blown components on the back. An surface mount 6-pin IC (marked U8) and a SMD resistor (marked R23). Here is a link to some photos: https://imgur.com/a/8hWJyiy.that pin 2 is most likely the ground pin, as that is the only pin that has a direct connection (short) with ground. I was also able to detect 12V on pin 3 & 4 when the camera was powered on. Something else that I noticed was that there is a similar
From what I can make out from the remain bits of the code on the resistor, it seems like the code could be 75R0, which means it's a 75 ohm 0805 SMD resistor, right? Please let me know if I at least got that right.
The IC however, I have no idea what it could be. I'm also not sure of the exact orientation of the chip, in other words where pin 1 is located, but I have indicated on the image which pin I suspect is pin 1. Based on my suspected pin 1, I can tell you
I am unable to find any information on the AJ6LE IC online, so I don't know if anyone here could maybe help to find out what exactly that IC is, so that we could hopefully determine if it is likely the same as the IC that has blown.couldn't find anything.
Otherwise I have also tried searching online for information on the camera board itself, but couldn't find anything that gave me any indication of the specs of the IC or what IC to try and replace it with. I also tried to search for the schematic, but
Also the leads coming into the camera board is:
- Red is 12V+
- Blue is GND
- Yellow is Video
Here is a link with a few photos of a circuit board that isn't working anymore:
https://imgur.com/a/8hWJyiy
If anyone can perhaps help me identify the blown IC or perhaps point me in the right direction that would be greatly appreciated.
Let me know if you require any other information from me.
Regards,
Jannie
Hi Folksof 220v to 15v) was blown. I've been able to replace the power supply board and had to replace some components (mainly a few ferrite beads and a resistor or 2, if I remember correctly) on the main PC board of the intercom unit itself as well. After that
I have a COMMAX DRC-4L Video doorphone camera that isn't working anymore.
This is part of a faulty Commax CDV-43k/DRC-4L (Stock Code: PI-1176) intercom that I basically got for free. I think something must have shorted or gone wrong as the power supply board of the main intercom unit (CDV-43k) itself (converting wall power
Long story short, once I remove the camera unit completely, I noticed 2 blown components on the back. An surface mount 6-pin IC (marked U8) and a SMD resistor (marked R23). Here is a link to some photos: https://imgur.com/a/8hWJyiy.that pin 2 is most likely the ground pin, as that is the only pin that has a direct connection (short) with ground. I was also able to detect 12V on pin 3 & 4 when the camera was powered on. Something else that I noticed was that there is a similar
From what I can make out from the remain bits of the code on the resistor, it seems like the code could be 75R0, which means it's a 75 ohm 0805 SMD resistor, right? Please let me know if I at least got that right.
The IC however, I have no idea what it could be. I'm also not sure of the exact orientation of the chip, in other words where pin 1 is located, but I have indicated on the image which pin I suspect is pin 1. Based on my suspected pin 1, I can tell you
I am unable to find any information on the AJ6LE IC online, so I don't know if anyone here could maybe help to find out what exactly that IC is, so that we could hopefully determine if it is likely the same as the IC that has blown.couldn't find anything.
Otherwise I have also tried searching online for information on the camera board itself, but couldn't find anything that gave me any indication of the specs of the IC or what IC to try and replace it with. I also tried to search for the schematic, but
Also the leads coming into the camera board is:
- Red is 12V+
- Blue is GND
- Yellow is Video
Here is a link with a few photos of a circuit board that isn't working anymore:
https://imgur.com/a/8hWJyiy
If anyone can perhaps help me identify the blown IC or perhaps point me in the right direction that would be greatly appreciated.
Let me know if you require any other information from me.
Regards,
Jannie
Hi Folksof 220v to 15v) was blown. I've been able to replace the power supply board and had to replace some components (mainly a few ferrite beads and a resistor or 2, if I remember correctly) on the main PC board of the intercom unit itself as well. After that
I have a COMMAX DRC-4L Video doorphone camera that isn't working anymore.
This is part of a faulty Commax CDV-43k/DRC-4L (Stock Code: PI-1176) intercom that I basically got for free. I think something must have shorted or gone wrong as the power supply board of the main intercom unit (CDV-43k) itself (converting wall power
Long story short, once I remove the camera unit completely, I noticed 2 blown components on the back. An surface mount 6-pin IC (marked U8) and a SMD resistor (marked R23). Here is a link to some photos: https://imgur.com/a/8hWJyiy.that pin 2 is most likely the ground pin, as that is the only pin that has a direct connection (short) with ground. I was also able to detect 12V on pin 3 & 4 when the camera was powered on. Something else that I noticed was that there is a similar
From what I can make out from the remain bits of the code on the resistor, it seems like the code could be 75R0, which means it's a 75 ohm 0805 SMD resistor, right? Please let me know if I at least got that right.
The IC however, I have no idea what it could be. I'm also not sure of the exact orientation of the chip, in other words where pin 1 is located, but I have indicated on the image which pin I suspect is pin 1. Based on my suspected pin 1, I can tell you
I am unable to find any information on the AJ6LE IC online, so I don't know if anyone here could maybe help to find out what exactly that IC is, so that we could hopefully determine if it is likely the same as the IC that has blown.couldn't find anything.
Otherwise I have also tried searching online for information on the camera board itself, but couldn't find anything that gave me any indication of the specs of the IC or what IC to try and replace it with. I also tried to search for the schematic, but
Also the leads coming into the camera board is:
- Red is 12V+
- Blue is GND
- Yellow is Video
Here is a link with a few photos of a circuit board that isn't working anymore:
https://imgur.com/a/8hWJyiy
If anyone can perhaps help me identify the blown IC or perhaps point me in the right direction that would be greatly appreciated.
Let me know if you require any other information from me.
Regards,
Jannie
That appears to be a current device - or at least it is available on the open market. Have you tried the "mother ship", being the manufacturer?
Here, also, is a current source: https://www.megateh.eu/products/commax-intercom-outdoor-stations/commax-drc-4l-video-doorphone-camera
Peter Wieck
Melrose Park, PA
On Wednesday, November 10, 2021 at 9:15:56 AM UTC-5, Jannie Brand wrote:of 220v to 15v) was blown. I've been able to replace the power supply board and had to replace some components (mainly a few ferrite beads and a resistor or 2, if I remember correctly) on the main PC board of the intercom unit itself as well. After that
Hi Folks
I have a COMMAX DRC-4L Video doorphone camera that isn't working anymore.
This is part of a faulty Commax CDV-43k/DRC-4L (Stock Code: PI-1176) intercom that I basically got for free. I think something must have shorted or gone wrong as the power supply board of the main intercom unit (CDV-43k) itself (converting wall power
you that pin 2 is most likely the ground pin, as that is the only pin that has a direct connection (short) with ground. I was also able to detect 12V on pin 3 & 4 when the camera was powered on. Something else that I noticed was that there is a similarLong story short, once I remove the camera unit completely, I noticed 2 blown components on the back. An surface mount 6-pin IC (marked U8) and a SMD resistor (marked R23). Here is a link to some photos: https://imgur.com/a/8hWJyiy.
From what I can make out from the remain bits of the code on the resistor, it seems like the code could be 75R0, which means it's a 75 ohm 0805 SMD resistor, right? Please let me know if I at least got that right.
The IC however, I have no idea what it could be. I'm also not sure of the exact orientation of the chip, in other words where pin 1 is located, but I have indicated on the image which pin I suspect is pin 1. Based on my suspected pin 1, I can tell
but couldn't find anything.I am unable to find any information on the AJ6LE IC online, so I don't know if anyone here could maybe help to find out what exactly that IC is, so that we could hopefully determine if it is likely the same as the IC that has blown.
Otherwise I have also tried searching online for information on the camera board itself, but couldn't find anything that gave me any indication of the specs of the IC or what IC to try and replace it with. I also tried to search for the schematic,
Also the leads coming into the camera board is:
- Red is 12V+
- Blue is GND
- Yellow is Video
Here is a link with a few photos of a circuit board that isn't working anymore:
https://imgur.com/a/8hWJyiy
If anyone can perhaps help me identify the blown IC or perhaps point me in the right direction that would be greatly appreciated.
Let me know if you require any other information from me.
Regards,Yes the resistor value is correct.
Jannie
Here is a webpage that can help
http://kiloohm.info/smd4-resistor/
Any chance you can locate a similar unit and take a peek inside?
J
Sysop: | Keyop |
---|---|
Location: | Huddersfield, West Yorkshire, UK |
Users: | 112 |
Nodes: | 8 (1 / 7) |
Uptime: | 254:46:16 |
Calls: | 2,467 |
Calls today: | 1 |
Files: | 8,616 |
Messages: | 1,887,347 |