【摘 要】
：
[例1]故障现象:灯管点亮2s后熄灭。分析与检修:根据故障现象,判断为背光板保护。用一导线将Protin保护点对地短接后开机,灯管不再熄灭,工作10 min后,用手逐个摸变压器的温升,
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[例1]故障现象:灯管点亮2s后熄灭。分析与检修:根据故障现象,判断为背光板保护。用一导线将Protin保护点对地短接后开机,灯管不再熄灭,工作10 min后,用手逐个摸变压器的温升,当摸到变压器T19时,发现很烫手,更换一只相同的变压器并取消短接线后开机,灯管不再熄灭,故障排除。
[Example 1] Symptom: The lamp turns off after 2s. Analysis and Maintenance: According to the phenomenon of failure, to determine the backlight protection. Protin protection point with a wire shorted to ground after the boot, the lamp is no longer extinguished, the work of 10 min, one by one touch the temperature rise of the transformer, when touched the transformer T19, found very hot, replace the same Transformer and cancel the short wiring boot, the lamp is no longer extinguished, troubleshooting.
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