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Just look to see if there is a fuse holder and fuse to the left side of the A1 Voltage Regulator between A1 and the reconnection switch. If it's there then you have the fuse mod.

I'd suggest first checking the connections from K8 to the S7 the Battle Short switch. Check the following with the genset OFF and Battle Short OFF. K8 terminal 8 should be connected to S7 terminal 6. Check for continuity between these two points. ~ 0 ohms K8 terminal 7 should be connected to...

Reference pics

After you start to compose a post or reply click on the "Go Advanced" button in the lower right. You should then see more option buttons at the top of the text entry box. Click on the one to the right of the two blue globes. You will then get a dialog box so you can navigate to and upload your...

I'd suggest checking the Classifieds. https://www.steelsoldiers.com/forumdisplay.php?126-Parts-for-sale

Pin 2 on DS7 is behaving as it should. With Battle Short ON this bypasses the Overload section of the K8 relay so it's behaving as if there was an overload detected by K8. Looks like either an issue with K8, wiring to K8, or wiring and/or components that send signals to K8 such as Burden...

Bingo!

I just looked and I see 148 MEP-803A's listed on GLA and another 38 on GovPlanet.

Just from looking at the .xls file here is what the data log seems to be to me. (I shifted the data so it was all aligned properly first.) From left to right.. Data Column 1: Voltage Phase A Data Column 2: Voltage Phase B Data Column 3: Voltage Phase C Data Column 4: Current Amps Phase...

Also check the probes to see if they are 1X, 10X or something else. A 10X probe only passes 10% of the voltage to the scopes input. Some scopes automatically detect which X factor the probes are and auto adjust the scaling accordingly. Other scopes don't automatically detect the probe type and...

https://www.steelsoldiers.com/showthread.php?175090-MEP-803A-will-not-turn-on/page4 There is an explanation of how the Interruptor works. It one of the last posts.

The convenience outlet are not wired into K1. They are fed separately. Here is a description of the latching circuit I did a while back... It's a latching circuit created by K1, S5, CR3 & K8. After the engine starts and oil pressure is up K20 closes and K1 terminal X has 24 volts supplied...

From my GLA experience you have to have items on your Watchlist in order to see what they've actually sold for. Need to go to Closed Watchlist on GLA to see what they've sold for. I followed a bunch of them coming out of GA recently. They sold for about $600-700 on average on GovPlanet. 37 of...

Marty, I appreciate the offer. The schematic is finalized and I already generate the needed Gerber files to get them fab'd by a PWB fab house. Have had great results with the house I use. Quick turn times, great quality and reasonable prices. If I can help you with your 831 woes just let me...

If the meter reads 120 then the switch is in the wrong position. If you haven't already you ought to download a copy of TM 9-6115-639-13&P. It covers that and everything else about running the 831A. https://www.steelsoldiers.com/showthread.php?155865-Manuals-for-the-MEP-831A

Is the toggle switch on the top of the inverter set to 240? Do NOT change the setting with the set running!

Ted - Thank you for the improvement suggestion. :roll: I too noticed the font was a bit small too. I revised the design and incorporated a larger font size for the terminal lettering. Those new PWB's just arrived this weekend. At the same time I ordered all the parts to build the next batch...

Utility power still on here in Pepperell, MA

See post #10 for a pic of my solution for my leaking cap. https://www.steelsoldiers.com/showthread.php?162006-MEP-803A-Finally-scored-one-and-had-a-question&highlight=bolt

My 802 had a leak in that area when I got it. There was a rubber cap on an unused nipple on the water pump. It had dried, cracked and was weeping. Others have had the same issue with the rubber caps leaking. Could be the cap leaking if it isn't the plug pointed out in the post above.