welder repair

There are likely many fuses in your welder, some are large capacity, some are smaller capacity, some protect the mains input, some protect the circuit boards, etc.

So you have to find out which one is blowing, whether you put in correct capacity fuses, etc.

Your manual may have a troubleshooting procedure that you should try to follow.

You should isolate the problem a little.

Ed, It may be that the diodes in the bank of diodes in your welder are damaged. If you need to repair this thing on a low budget, take it to a welding repair/supply shop and ask for a written quotation. Once you have identified the problem and the cost of the repair, you have two options available to you. You either go ahead with the repair at the quoted price, or you say 'No thank you' and purchase the components to DIY the repair yourself. Be aware that the shop may be giving its best guess at the problem and that the identification of the problem may not be correct. The fact is, that if they have identified the problem incorrectly, and they carry out the repair procedure, THEY have to carry the can and make good the mistake THEY have made. If you carry out the repair based upon their guess, YOU have to carry the can and have wasted your time and money on the recommended repair. I hope this helps, Best regards, Anthony.