Mr. Pinball Tip:

Transformers rarely fail. If the transformer buzzes very loudly, gets very hot very quickly, and its output voltages are wrong, then the transformer is probably going bad and should be replaced.

Most problems attributed to the transformer are really a failure elsewhere. Cold solder joints, broken wires, bad fuse holders, bad wall plug, broken switches, and bad connectors symptoms are often mistakenly blamed on the transformer. Be absolutely certain that the transformer has failed before going to the bother of replacing it.
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