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Help with big blue 300p no output hlp 22
Hi I recently purchased a big blue 300p in rough shape. It says hlp 22 as soon as I start it and hlp 22 even with key turned on and not running. F1 fuse is good but it has no AC or DC output . Please help Thanks Dan
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You've lost your SCR firing board, nothing much happens after that. Why, cause the engine is running too fast, and/or may have had the battery boosted. You likely have also lost your voltage board. Best to replace as a set anyways. About a grand for both.Originally posted by Generator Dan View Post -
Help with big blue 300p no output hlp 22
So its pretty much junk then I guess. Is the F1 fuse wires the excitation circuit and if so shouldn't I have voltage on them? Thanks DanComment
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Well no, unsure if this unit has the 2 boards or just the one. If both then just replace them, machine will fire up. Set the RPM, via frequency at around the 61.6-61.8, and its a happy machine again. Its only money and not worth anything not working.Comment
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miller big blue 300 no power
Can I just put 12 volts DC to the brushes to see if it even produces anything. Usually I do that to generators to make sure the rotor and stator are OK before assuming the voltage regulator is bad.Comment
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Help with big blue 300p no output hlp 22
OK ill take your word for it . Im going to order both the main module board and voltage regulator board which are around $1200 a pair. I wish there was a way to test them or find out which one of the two was bad. The machine is in real rough shape . It came from the steel mills and is beat up. If the boards are not the fix then what can I try?? I repair lots of generators but not welders. I bought this for $900 with the intension of having it around the shop. Thanks for your helpComment
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