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  1. flydude92

    MEP-005A Over Voltage Problem

    Excellent. Enjoy it.
  2. flydude92

    MEP-005A Over Voltage Problem

    Harleyd315 What I know so far about my generator is what I learned working on the over voltage problem. But I will try to help. The original frequency meters on the 004/005 can be inaccurate and fail often. The first thing I would do is verify the frequency with a meter or gauge or verify it is...
  3. flydude92

    MEP-005A Over Voltage Problem

    I remember your experience and suspect I have the same problem. I have a lot of corrosion on my regulator board and my problem occurred a couple days after noticing moisture. At this point I plan to clean up the board, replace the obvious corroded diodes and a few other components as needed and...
  4. flydude92

    MEP-005A Over Voltage Problem

    I finally found the problem preventing the generator from shutting down when the overvoltage fault occurred. The Start/Run/Stop switch was wired incorrectly. Either someone miss wired it by accident when replacing the switch, miss wired it to cover a problem or did it on purpose to cause...
  5. flydude92

    MEP-005A Over Voltage Problem

    More updates: It is a little difficult to bench test the components without a variac so I bought one. (I’m always looking for a reason to buy tools) I tested the overvoltage relay (K2) and found it is working properly. It turns out the 28V I thought was used to operate the relay was actually...
  6. flydude92

    MEP-005A Over Voltage Problem

    I hadn't heard that before. I have a utility gen set but will check the TM's again to see if it mentions the difference. Thanks.
  7. flydude92

    MEP-005A Over Voltage Problem

    Would brake cleaner remove the coating on the board?
  8. flydude92

    MEP-005A Over Voltage Problem

    Update: I replaced the diodes in the generator and they didn’t fix the problem. I tried heating the generator to remove moisture without success. I decided it would be a good idea to find out why it isn’t shutting off while I still have a voltage problem. I checked for voltage going into the...
  9. flydude92

    MEP-005A Over Voltage Problem

    First of all, thanks for telling me I was right. I wasn't expecting to be right about anything while I learned how to repair this generator.:smile: After I get the diodes replaced next week I will warm it up for sure. You may be right about the VR box. When I get it back together and it doesn't...
  10. flydude92

    MEP-005A Over Voltage Problem

    According to the TM's it is suppose to shut down the generator and open the contactor. On the second try I turned on the main breaker and it didn't shut off when the voltage jumped. The Hardy Diesel meter didn't fry. I tried it in the house after my problems and it worked fine. When I plugged it...
  11. flydude92

    MEP-005A Over Voltage Problem

    It is supposed to shut down but didn't. It seems I have more than one problem to look into. I can fix most anything after I figure out how it works. I haven't had a generator before so I have a lot to learn. In the mean time I am going by what other more knowledgeable people tell me. Since I...
  12. flydude92

    MEP-005A Over Voltage Problem

    It is a cheap meter and all I had left to read the frequency with but it did read my house frequency correctly. The Hardy Diesel meter stopped working when the voltage went up that high so I don't have another meter. I may have read it wrong but at this point I will try to deal with the voltage...
  13. flydude92

    MEP-005A Over Voltage Problem

    I purchased a working MEP-005A in August 2012 and put about 10 additional hours on it. It has worked very well until now. Every month I run it for about an hour to make sure everything works. On 2/1/13 it ran for about 10 seconds with proper voltage and frequency when the over voltage light...
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