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How to overhaul that led light does not illuminate by floodlights lsd

How to overhaul that led light does not illuminate by
Article Posted: 06/18/2013
Article Views: 89
Articles Written: 370
Word Count: 447
Article Votes: 0
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How to overhaul that led light does not illuminate

Advice,Electronics,Science & Technology
1, common is the resonant capacitor C6 breakdown (short circuit) or pressure reduction (soft breakdown), should be replaced by the high-quality polyester or CBB capacitor that the same voltage capacity is above 1kV .

2, open filament lamp. If the lamp is not serious black, parallel 0.047µF/400V across broken wire foot after emergency use polyester capacitors.

3, R1, R2 open or variable value (generally greater possibility is failure in R1),substitution with the same high-resistance resistor 1/4W .

4, transistor open. Found that only one transistor open, but can not replace one, should replace one pair of voltage above 400V same model in pairing switch. Or prone to rolling or re-burn tube lights.

5, lights flashing. If lamp is serious black, check D5, D6 whether the Weld or open, if D5, D6 soft breakdown or filter capacitor C1 leakage and adverse, which also make lights flash.

6,it is difficult to light up for the lamp , sometimes touching the lamp can be lit or lights roll, which may be C3, C4 insufficient capacity mismatch.

7, if the single low-power energy-saving lamps lit filament emerging redness or luminous phenomena should also check whether the soft breakdown D1 ~ D4, C1 is installed backwards or leakage, power supply part is short circuit or not.

8, Chokes L, and the oscillation transformer B, cores are broken. Should single core change, we should pay attention to three points: (1) using the core to meet the requirements, otherwise it may cause choke inductance values ??have greater access to lay hidden energy-saving lamps; (2) the magnetic gap is not too small, so magnetic saturation; (3) after interstitial magnetic material with a suitable pad,a good pad with adhesive glue and wrap high temperature flame retardant tape, to prevent loosening. In addition can not pick the wrong side to B with the same name.

9, repair using trigger tube electronic ballast, should focus on checking bidirectional trigger diode, this pipe is generally used DB3 type, it's two-way breakdown voltage is 32 ± 4V.

Lead lighting basically adopts high quality LED lighting chip and power so that the power LED Outdoor Lighting such as LED flood light, LED tunnel lamp does not damage after the long-term use, reducing repair and maintenance and the human and material resources commitment and traffic accidents, which is the preferable choice for variety of outdoor lighting, while LED tube greatly restore the most realistic lighting effects and save a lot of electricity costs due to high-quality energy-saving and soft lighting for commercial lighting and home lighting, we can find more high-quality LED lighting in, Li Sida lighting join us to usher in more comfortable and natural tomorrow.

Related Articles - Outdoor Lighting, LED filament lamp, high-resistance, short circuit, oscillation transformer, capacity, break down, voltage, electronic ballast, LED flood l,

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