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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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B&O LX2802
Goes to black screen after short warm up (10-30 sec). Measured hor. drive,
this should be 230 Vpp but changes from ca 50 to 150 Vpp. The rate of change is 50 Hz (the same as line freq. -230v / 50Hz). Should I go for a defective line trafo ( somehow leaking?) or a defective deflection coil? Due to the low freq. of the oscillation, I don't think it's bad caps, as could be expected with high oscillation... Def. coil resistance: hor = 2.0-2.1 ohm, vert = 6.5 - 6.6 ohm Any ideas? |