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The Varistor is just a surge suppressor. It's normal to have 0 on one side and 24 volts on the other.
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Electronic Parts Replacements Info for the MEP-802A
- Thread starter Daybreak
- Start date
- 16,766
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....and I realize I should have disconnected the battery terminals prior to sticking a metal wrench inside the cabinet.
Not quite right. You realize NOW, that you should have disconnected the Negative Battery Terminal before sticking a wrench in there.
Learning by doing.
A lesson you will not forget soon.
Not quite right. You realize NOW, that you should have disconnected the Negative Battery Terminal before sticking a wrench in there.
Learning by doing.
A lesson you will not forget soon. - 2,145
- 3,526
- 113
- Location
- Pepperell, Massachusetts
Years ago I didn't disconnect the batteries in my 802 while testing a Remote Star system prototype. It fell and landed on the MT4 shunt. 
Fried the prototype and had to start all over. Lesson learned.
Fried the prototype and had to start all over. Lesson learned.
- 16,766
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- Burgkunstadt, Germany
For years I kept half of a 1/2 inch wrench in my tool box. The other half turned to plasma. I learned incredible respect that day.
Thumpin
New member
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- Melbourne, Kentucky
Thank you all for your help. I just watched a video on what an MOV is and it helped a lot. It is likely that I may not have hurt anything when I made contact. I do believe the 7.5 amp circuit breaker tripped.....and it is likely that I may have touched the resistor above and not the V5 terminal.
I looked at the circuit and I could not tell where the wire goes after leaving the V5 varistor. I could only tell that it goes to Circuit Board 5 - terminal 10....but then I could not find anymore information on the cabinet that tells me where that is or what it does.
Hopefully I can get the generator fired up and connected to a significant load this week and see if everything works as it should.
Dave
I looked at the circuit and I could not tell where the wire goes after leaving the V5 varistor. I could only tell that it goes to Circuit Board 5 - terminal 10....but then I could not find anymore information on the cabinet that tells me where that is or what it does.
Hopefully I can get the generator fired up and connected to a significant load this week and see if everything works as it should.
Dave
Thumpin
New member
- 3
- 9
- 3
- Location
- Melbourne, Kentucky
I just wanted to follow up and give you all an update.
I got all the repairs finished, fired it up, and connected it to my RV with the AC and two 1,500 watt heaters.
The MEP802A ran just fine at a 60% load for half an hour. There was a bit of a smell from it as it warmed up and burnt off the stale smell from 20 years of being in storage - but it performed flawlessly!
Thankfully my clumsy wrench incident didn't do any damage!
I got all the repairs finished, fired it up, and connected it to my RV with the AC and two 1,500 watt heaters.
The MEP802A ran just fine at a 60% load for half an hour. There was a bit of a smell from it as it warmed up and burnt off the stale smell from 20 years of being in storage - but it performed flawlessly!
Thankfully my clumsy wrench incident didn't do any damage!