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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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Panasonic remote control model# eur7603z9a
Remote just died one day, didn't drop it or any physical damage. Tried
new batteries, I have voltage throughout the circuit board all the way up to the infrared LED. The backlight LEDs and the DBS LED flash shortly once while I connect B+. Most of the Test Points indicate switch activity, but no switch indication returned to the LED under the switch button Eg: TV, VCR... The crystal looks like it is working just fine. The infrared LED checks OK. I have inspected with a microscope as best as I can for a cracked run, but the switch side is covered by a white coating making it impossible for visual inspection. A replacement remote is right at $50, and I'm not sure if a universal will have all the options. They went to the trouble of putting Test Points on the board, so I figured there may be some info/schematics floating around somewhere. Any help would be greatly appreciated. Bill |
#2
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Panasonic remote control model# eur7603z9a
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#3
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Panasonic remote control model# eur7603z9a
On Apr 28, 3:34 pm, Jim Poore wrote:
wrote: Remote just died one day, didn't drop it or any physical damage. Tried new batteries, I have voltage throughout the circuit board all the way up to the infrared LED. The backlight LEDs and the DBS LED flash shortly once while I connect B+. Most of the Test Points indicate switch activity, but no switch indication returned to the LED under the switch button Eg: TV, VCR... The crystal looks like it is working just fine. The infrared LED checks OK. I have inspected with a microscope as best as I can for a cracked run, but the switch side is covered by a white coating making it impossible for visual inspection. A replacement remote is right at $50, and I'm not sure if a universal will have all the options. They went to the trouble of putting Test Points on the board, so I figured there may be some info/schematics floating around somewhere. Any help would be greatly appreciated. Bill How did you check the infrared led? I have found the even tho the infrared LED can check ok with a voltmeter test, it still may be bad. I always check my remotes with a little card available Radio Shack. If the remote is transmitting the little square on the card will light up. A dim room is better for checking as the card doesnt light up all that brightly. JIm- Hide quoted text - - Show quoted text - Jim, While checking the LED with the diode test setting on my multimeter (to supply power), I viewed the light from the LED through my camera on my cell phone. thanks, Bill |
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Panasonic remote control model# eur7603z9a
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#5
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Panasonic remote control model# eur7603z9a
Lol....I learn something new every day...I would have never thought to
use a camera to view infrared activity. My hats off to you for your ingenuity. Not new. Common practice. -- Al, the usual |
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