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Find a suction cup (suction cup hook is OK) and stick it to the gusset next to the lamp, slowly pull it down, to force evenly, take the gusset off, and take the lamp out from the inside to replace it.
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The picture is too small to see ......However, there should be a buckle inside, not to the top, to pry down.
Suction cups are used to remove the buckle plate, and do not use a blade to pry. Any kind of suction cup can be, hook suction cup, mobile phone suction cup, take turns to suck from the four corners of the gusset, don't suck from the middle, it will be troublesome to deform the gusset.
First cut off the power supply, use the suction cup (the kind of hook on the tile, made of rubber) to suck the electrical panel, and take off the electrical panel (the suction position should be cautious and the action should be light). Then pull the lamp buckle away, unplug the lamp, replace the lamp, buckle the button, and cover the panel. Replace the lamp with the original ballast. >>>More
To open this hood, the key device is at one of the two ends of the lamp. If you look closely, you will see that one end has an opening and closing interface. Hold it firmly with your hand and exert force outward, and the end cover will be uncovered.
If the ballast is broken, just buy a corresponding ballast and replace it.
In fact, if the lamp is broken, just take the lamp to the hardware store to buy a new one. >>>More