Question about JVC AV-20920 20" TV
I have no picture or sound only the red timer light blinking. I tried unplugging the tv for awhile but it did not help.
You probably have one or two diodes bad which would have to be unsoldered to replace. Since it is a small TV, it may not be worthwhile to take it to a repair shop -- if you can find a good electronics tech with soldering equipment and a multimeter, have them check out D951 a 12 volt zener diode near the power relay. If good, then I would check out D941 and D942 in the power supply. If all three diodes are bad, the set probably took a power surge or lightening strike and could have other shorted components as well.
Posted on Dec 16, 2006
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Standby/Power light of the TV blinks when there is any internal malfunction in
the TV. The self-diagnostic function of the TV will cause the STANDBY light to
blink or flash when the television detects an issue. The number of times the
STANDBY light flashes corresponds to a specific issue.
examples are given below; some of the issues may be resolved without the need
1 blink / 2 blinks / 5 blinks: - This indicates that there may be a power-related problem with your set.
3 blinks: - This indicates that there may be a power-related problem with your set. The set will need to be serviced to allow a technician to determine the specific issue that needs to be repaired. If the power light flashes three times in sequence in a Lamp TV, the lamp cover is not securely attached. Reattach the lamp cover to resolve this issue.
4 blinks: - This indicates that there may be a back light or lamp power problem.
6 blinks: - This indicates that there is some kind of audio problem with your set.
7 blinks: - This indicates that there is a temperature problem with your set. Please check to make sure that the air vents on the sides and back of the set are not blocked or clogged and there is adequate ventilation around the television. We recommend that you check and clean the vents periodically to make sure the set receives adequate air flow. If the problem continues, the set will need to be serviced.
8 blinks: - This indicates that there may be a video-related problem with your set. If the flash sequence is not listed above or the light continues to flash, follow the steps below to perform a power reset:
Try the following steps to check if the issue can be resolved.
Turn off the television.
Unplug the television power cord from the electrical outlet.
Let the television remain without power for 60 seconds.
Plug the power cord back into the electrical outlet.
the television is plugged into a power strip or surge protector, remove it from
the power strip or surge protector and plug it directly into the wall outlet.
If the issue is resolved, the problem is with the power strip or surge
protector and not the television.
the issue continues to occur, service may be required.
for using Fixya.
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