Question about Vivitar 285HV Flash

3 Answers

Vivitar 285 Service Manual

Hi
Sorry to bother, but you said you had the Service manual for the Vivitar 285/285HV. I burned a transistor in the unit, that reads 603 05G. I don't know what that means. Can you email me the manual? or just tell me what kind of transistor is this?
Thanks!

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  • 4 more comments 
  • gemoreno Sep 07, 2008

    gonzalomorenorovetto@gmail.com
    thxs


  • Sterculias Sep 09, 2008

    I am looking for a Vivitar 285 service manual (not owners manual) as I need to open up the flash to do some modifications for UV photography.



    Regards,



    Doug.

  • Jonathan willner Nov 30, 2008

    my flash willnot chrge the capacitor.need service manual

    jwillner@sympatico.ca

  • guyajr Apr 06, 2009

    Hi does anyone have a service manual for a vivitar 285hv?

  • Anonymous Apr 20, 2009

    need the service manual to dismantle my vivitar HV 285
    could anyone email me... neweditionenator@gmail.com
    any hel p would be very appreciated
    thanks



  • hites Apr 30, 2009

    I just bought on ebay a 285HV and its dead. When I put fresh batteries in it there is no life not even a whine from the capaciter loading. Can I get a copy of a service manual? I started to take it apart and after taking out all the screws it was still solid. I am not willing to pry apart anything untill I know more. Any help would be appreciated.

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Have service manual for sale.

atdleeatnetzerodotcom

Posted on Dec 03, 2014

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I did a search for a data sheet for that 603 05G and nothing shows up for transistors or SCRs . Are there any other numbers on the device?

A simple Google search such as "transistor data sheet for 603 05G" would normally bring up a full page of data sheet sites.

Regards,
Doug.

Posted on Sep 08, 2008

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What is your email?

Posted on Sep 07, 2008

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1 Answer

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Need diagrams for a Vivitar 285HV Flash


I had the same problem on a new 285HV flash. I pulled it apart and found a blown resistor and track in the head of the flash.
The flash was fairly easy to pull apart, there is a clip hiding behind the blue disk, the rest is just screws.
There are 3 circuit boards, two in the base and one in the head.
The blown resister is in the head and is the large resister next to the violet wire. From the edge of the board there is R22 brown-black-brown, two diodes, another resistor yellow-violet-brown and then the one that died.
I have the service manual for the flash and it is titled 285/285HV but the circuit board in the service manual and in the flash are different.
After much studying of the circuit diagram I believe the value of the resister is 12K 2watt (90% sure, if not it is 10K 2watt).
I replaced the resistor with the 12K and was able to use the extra length of the leg of the resistor to bypass the blown track, used some heat shrink to insulate the leg from shorting out with the board.
I have tested the flash and it is working but I have not used it extensively.

Disclaimer: this board is right next to the capacitor, you don't want to touch it if it has a charge. Use a multimeter to check.

I bought the resistor from here: www.digikey.com Part No. P12KW-2BK-ND $0.206 (min order 5 still only a $1.03)

Good luck and remember I am not an electronics tech and your problem may be different to mine.

Richard

Jan 07, 2008 | Vivitar 285HV Flash

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