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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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#1
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heater controller dead?
Have a broken heater:
http://www.laskoproducts.com/heaters/model_5365.html The symtom is when turned on, the LCD displays some random junk for a second and then go dim. Pressing any button also triggers displaying some random junk. The mechanical portion of the heater works fine. I can "hot wire" the heater to work bypassing the controller board, but I lose the remote control feature and temperature regulation this way. There are many easily replaceble components (transistors, resistors, capacitors, ..) on the controller board. There is also a chip (probably a custom controller) and an LCD display. If the chip is fried, there is probably no way to get a replacement. Is there any way to determine whether the problem is the chip, or any one of the discreet components on the board? BTW, is there any software to help create a schematic diagram from photos of the circuit board? |
#2
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heater controller dead?
peter wrote:
Have a broken heater: http://www.laskoproducts.com/heaters/model_5365.html The symtom is when turned on, the LCD displays some random junk for a second and then go dim. Pressing any button also triggers displaying some random junk. The mechanical portion of the heater works fine. I can "hot wire" the heater to work bypassing the controller board, but I lose the remote control feature and temperature regulation this way. There are many easily replaceble components (transistors, resistors, capacitors, ..) on the controller board. There is also a chip (probably a custom controller) and an LCD display. If the chip is fried, there is probably no way to get a replacement. Is there any way to determine whether the problem is the chip, or any one of the discreet components on the board? BTW, is there any software to help create a schematic diagram from photos of the circuit board? I would check electrolytic capacitors in the power supply, the first thing to do is to make sure the voltages it needs are all present and clean. |
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