+ Post New Thread
Results 1 to 6 of 6
  1. #1
    Newbie level 3
    Points: 23, Level: 1

    Join Date
    Jul 2019
    Posts
    3
    Helped
    0 / 0
    Points
    23
    Level
    1

    help identify diode LV1 G629

    Hello
    I am trying to replace a couple of diodes from a DVR. One of the diodes is shorted and the other is open. They are connected to the 12V input connector as far as I can tell.
    The diode is an SMD with only LV1 G629 written on it. Please let me know what I can replace this with. There were two other of these diodes on the board which both read 0.6V and 1.2V forward/reverse bias. I am not sure how they were connected to give these measurements. Thank you all.

    •   AltAdvertisement

        
       

  2. #2
    Advanced Member level 4
    Points: 6,247, Level: 18
    kripacharya's Avatar
    Join Date
    Dec 2012
    Location
    New Delhi
    Posts
    1,209
    Helped
    182 / 182
    Points
    6,247
    Level
    18

    Re: help identify diode LV1 G629

    A high-res photo of the component usually helps identification quicker. Please provide.



    •   AltAdvertisement

        
       

  3. #3
    Newbie level 3
    Points: 23, Level: 1

    Join Date
    Jul 2019
    Posts
    3
    Helped
    0 / 0
    Points
    23
    Level
    1

    Re: help identify diode LV1 G629

    Thank you for your reply. I am attaching the photos. Hopefully they help.

    Click image for larger version. 

Name:	IMG_8640 copy.jpg 
Views:	10 
Size:	494.3 KB 
ID:	154165

    Click image for larger version. 

Name:	IMG_8630.jpg 
Views:	6 
Size:	24.3 KB 
ID:	154166



    •   AltAdvertisement

        
       

  4. #4
    Advanced Member level 4
    Points: 6,247, Level: 18
    kripacharya's Avatar
    Join Date
    Dec 2012
    Location
    New Delhi
    Posts
    1,209
    Helped
    182 / 182
    Points
    6,247
    Level
    18

    Re: help identify diode LV1 G629

    Nope sorry. Can't find anything definite about these markings.
    Can you reveal the maker/ model of your DVR ? Sometimes companies in east asia use parts locally made which are harder to trace.

    Or you might be able to get hold of a maintenance/ service manual for the same and see what part is listed.



  5. #5
    Super Moderator
    Points: 29,792, Level: 42
    andre_teprom's Avatar
    Join Date
    Nov 2006
    Location
    Brazil
    Posts
    8,893
    Helped
    1125 / 1125
    Points
    29,792
    Level
    42
    Blog Entries
    9

    Re: help identify diode LV1 G629

    One of the diodes is shorted and the other is open. They are connected to the 12V input connector as far as I can tell.
    Surely you should know that the mere information that both the diodes are connected to a 12v bus is not elucidative by itself since diodes are polarized devices; but if I were to bet based on the information that there are 2 diodes connected to something, and that the only info found on the Web regarding diodes with SMD marking codes similar to that of the photo, I would guess that it is a suppression diode:


    From the picture seems like Anode from one is connected to Kathode from other, also suggesting the typical arrangement diodes limmiting input within a range of [Vcc+Vd,GND-Vd] but once both are close to the Jack connector (12v power input ?). Anyway it is likely the first supposition makes more sense, in the case, suppression diodes. In short, try to provide additional information regarding what else is connected in the nearby of the burned device.
    --------------------------------------------------------------------------------------------------
    Part of the world that you live in, You are the part that you're giving ( Renaissance )



    •   AltAdvertisement

        
       

  6. #6
    Newbie level 3
    Points: 23, Level: 1

    Join Date
    Jul 2019
    Posts
    3
    Helped
    0 / 0
    Points
    23
    Level
    1

    Re: help identify diode LV1 G629

    Thank you for your response.
    It is a Telpix TVST-TR2916A 16CH TR series 1080P Hybrid Security DVR System
    I tried looking for a service manual but haven't had any luck.



--[[ ]]--