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You need to test on the Terminal, not the disconnected F1 and F2 wires!
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Good, now on to the next testPut the mm on the terminal not the wires where F1 and F2 are disconnected.
Got 24vdc in the start mode.
Kris
No, One lead of mm goes on H1 the other lead of MM goes to H4Tested H1 and H4 separately to ground with MM set at 250 VAC max.
Had gen running in run mode after starting.
No volts on either H1 nor H4 on the transformer.
Also no volts on volt meter in control panel.
Kris
Ok, now did you change the Voltage Regulator Board with the one you bought on ebay? If so, this means that the parts (diodes / scr's) mounted on the heat sink next to Transformer T2 are gone - at this point you may want to consider sending the entire A11 unit to me for repair. I suspect that the 2 or 4 smaller chassis mounted caps are gone too.Tested between H1 and H4 and still no volts. But as long as I hold the start in its mode I get 100 volts on the control panel and the hz jumped higher than before. In run no volts or HZ on the control panel.
Kris
which test would that be?It may take a week or two before I can do another test.
Kris
Thanks Kris, will do - when you get your A11 back everything should fall into place. We will have a fully restored to spec A11 to work with - it maybe a good time now to replace the cooked, but still ohming correct to 1.5K Resistor on the other A5 board while I am getting A11 done and mean while you can also check out the other circuit boards throughout your 004A unit visually for signs of any damage or loose components.Yes Peter
I think the people that read this post should know the potential of the damage that can happen to these units and maybe help them evaluate their own machines.
So far I believe we have gone through a lot of troubleshooting and testing.
It has been a mission for me.
The next test will be when I get the A11 back.
Kris
OK
Their is another Resister next to the cooked R3 on A5, that seen heat also.
Where would I get those Resisters?
Good plan while I wait.
Kris
Kris,
This would be also a good time to get intimately acquainted with the Parts Manual of your Genset, the -24P
TM-9-6115-464-24P
Any MEP Owner should take the time to learn to love this Manual as it is your friend and your companion
If you don't know the Item your looking for by name of Abbreviation (which is usually printed next to the part etc on the chassis) then skip the index and start to simply scroll through the manual until you find the explosion drawing of the compartment you are working in or have a trouble some part located.
After each explosion drawings is a list of all parts in that particular area listed by number as indicated in the explosion drawings
Sub parts, like circuit boards are usually on the following pages each with its own explosion drawing and then the parts list
Locate the A5 assembly by first finding the general area A5 is located - A5 with all its components is then listed afterwards
When you find the number in the explosion drawing of the component then go to the parts list and look up the Part # which could be listed as Manuafacturer Part Number or NSN National Stock Number
then google the part # / nsn to find out of what that part actually is - the NSN's are very detailed with Type of Resistor / Capacitor, Voltage / Watt Ratings beside the actual value of the component
Then you can go to Mouser.com or Digikey.com and search for a similar part in their searchable databases
If you can't find the part then post all relevant information from your goolge search here - this will make it easier to help find a cross reference
Please do not expect us to find every single part / nsn number in the parts manual for you - this is beyond the scope of this forum
"Give a Man a Fish, and You Feed Him for a Day. Teach a Man To Fish, and You Feed Him for a Lifetime"
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