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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Crate BV150H amp , safety issue
Second one I've come across where the standby lamp thinks it is a lighthouse
( for a short while). When cooled down the neon's now black internal dropper , 1/3W or so, measured 550R . The switch housing says "110V lamp", surely I'm not the only one to have come across this arson issue. I don't have the schematic for the 150 , the BV120 schematic has the neon on the HT ac side, not the rectified and smoothed side. I've not taken the amp apart to explore wiring but have not found a dropper additional to the internal neon set for USA 110V mains wiring purposes. What is the work around , separate neon ala Marshall valve amps etc. While at it, I suspect (not examined yet but suspiciously bright) that the mains-on neon is also set for 110V like the other BV150H . I'm in 240V land and that will need accommodating as well. This one 2003 manufacture and without attention, that dropper will go pyrotechnic in ten more years of use also |
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