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Message body Emoticons View more Emoticons	Font colour: Default Dark Red Red Orange Brown Yellow Green Olive Cyan Blue Dark Blue Indigo Violet White Black  Font size: Tiny Small Normal Large Huge Close Tags [quote="vtech"]Here is a couple of schematics. The yellow is the pcb for the lamps and all you need is two wires direct from txformer. Second one is the main & part of preamp. perhaps a quick dc voltage check may reveal something. Sounds like the hum may be either a bad connection issue or more like a "man made" problem. Either way it should be easy to find out. [img]http://i67.photobucket.com/albums/h287/rramani/Tx1500lamps.jpg[/img] [img]http://i67.photobucket.com/albums/h287/rramani/Tx1500.jpg[/img][/quote]
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