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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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LiquidVideo L17LCD2 flashing power light repair
Symptom: LCD monitor does not turn on, but power light flashes when
on/off switch pressed. Solution: bad capacitors on low voltage board. Details with pictures he http://www.wizardanswers.com/liquidvideorepair.html John |
#2
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LiquidVideo L17LCD2 flashing power light repair
The power supply has failed, or there is a short on one of the boards
loading the supply. These types of monitors and TV sets are serviced by board swapping. If you have a lot of service experience and the test gear, if the problem is simple you may be able to find it with conventional troubleshooting. Jerry G. ====== On Jan 18, 8:04*pm, John wrote: Symptom: LCD monitor does not turn on, but power light flashes when on/off switch pressed. Solution: bad capacitors on low voltage board. Details with pictures hehttp://www.wizardanswers.com/liquidvideorepair.html John |
#3
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LiquidVideo L17LCD2 flashing power light repair
In this case, no test equipment was needed - the pictures on the
linked page show the electrolytics have swollen ends. This was probably a "save 2 cents" design-related failure, where the capacitors are running right at their 16 volt rating. Replacing them (with 35V caps) restored "like new" operation. John On Fri, 18 Jan 2008 18:36:31 -0800 (PST), "Jerry G." wrote: The power supply has failed, or there is a short on one of the boards loading the supply. These types of monitors and TV sets are serviced by board swapping. If you have a lot of service experience and the test gear, if the problem is simple you may be able to find it with conventional troubleshooting. Jerry G. ====== On Jan 18, 8:04*pm, John wrote: Symptom: LCD monitor does not turn on, but power light flashes when on/off switch pressed. Solution: bad capacitors on low voltage board. Details with pictures hehttp://www.wizardanswers.com/liquidvideorepair.html John |
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