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Viper 5706V remote start repair - no votage on remote start wires

Discussion in 'Audio & Video' started by retrogamez, Dec 16, 2015.

  1. Dec 16, 2015 at 1:48 PM
    #1
    retrogamez

    retrogamez [OP] Member

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    I bought one of these alarms cheap on ebay as defective. Upon testing it out I found that the starter relay was not outputting any voltage during start. I hoped it was just a bad relay but after taking it apart and testing the relay. I found it to be working properly. So I started following the traces and found a npn transistor that was not functioning properly. To test I swapped it with one of the same transistors down where the d2d port is and now remote start is working properly. I have ordered a new transistor to replace the one I borrowed and installed this in my Tacoma using the hardwire bypass setup. Since I couldn't find any info online about these units I figured I would post some pics in case anyone else runs into an issue with one.


    bad starter transitor.jpg
     
    mikalcarbine likes this.
  2. Dec 17, 2015 at 7:41 AM
    #2
    ranger098

    ranger098 Well-Known Member

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    Whoa. I thought i was cool soldering the control panel on my washing machine.. this is good stuff. I hope you got it for next to free though, fully functional brains on ebay sell for around 50 bucks., and i bought a brand new complete 2-way viper system on Amazon for 189.
     
  3. Dec 17, 2015 at 9:06 AM
    #3
    retrogamez

    retrogamez [OP] Member

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    Lol thanks. I was included in a box of defective items. I like to repair electronics as a hobby. Otherwise I probably wouldn't have specifically been looking for a remote start to repair. Since it came with a bunch of other items and looked to be a complete unit. I figured it wouldn't hurt to see if I could get it working. Here is a pic of them replaced. The ones with the 1P are the new transistors. I replaced the two by the d2d port. They were only 20 cents a piece. I guess I should mention that I used a hot air solder iron. Which is used for surface mount IC's not a regular iron. I guess most people don't have one of these but maybe you might know someone who does. None the less maybe you want to see what these look like on the inside without voiding your warranty. Here are some more pics. The two transistors on the bottom left next to the red d2d port with 1P on them are the new ones.
    repaired.jpg
    Here is a pic of the bottom
    IMG_1993.jpg
     
  4. Dec 17, 2015 at 6:47 PM
    #4
    Justinlhc

    Justinlhc Not looking for a relationship

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    My soldering skills are comparable to a rabid gorilla on cocaine. Possibly worse. I envy your skills. :bowdown:
     
  5. Jul 31, 2019 at 12:05 PM
    #5
    aalmujah

    aalmujah New Member

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    I am running into the SAME issue on my car, any chance I can get the exact part number or model of the npn transistors? It's difficult to tell from the pictures :/
     
  6. Feb 5, 2020 at 6:40 PM
    #6
    wireproof

    wireproof New Member

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    Viper 5706V
    I hate to be that guy who bumps old threads .. but as it's already been done somewhat recently I too am having an issue with that same NPN Transistor and the documentation of Viper products is non-existent. Can you let us know what number or code is on that Transistor that you replaced so I can purchase the right one? I cannot make out the code with the photos provided even by zooming in. TIA
     
  7. Feb 6, 2020 at 9:16 AM
    #7
    retrogamez

    retrogamez [OP] Member

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  8. Feb 6, 2020 at 11:02 AM
    #8
    wireproof

    wireproof New Member

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    Thank you so much! You are a lifesaver!
     

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