Re: Fail in LED Output of Power Supply in LG 42LB5600
Thanks.
How can modify power board to reduce output voltage results no fail in new bought LED String in future؟
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Last Activity: 01-24-2019, 02:19 AM
Joined: 01-14-2019
Location: mhd
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Re: Fail in LED Output of Power Supply in LG 42LB5600
V(LED-)-V(GND)(Maximum in t=0~10s)= 0.2V
V(LED+)-V(GND)(Maximum in t=0~10s)= 288V
V(LED-)-V(GND)(t>10s)= 0.1V
V(LED+)-V(GND)(t>10s)= 120V
V(DRV-ON)-V(GND)=3.47V
Voltage of output must be 208V,235mA....Leave a comment:
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Fail in LED Output of Power Supply in LG 42LB5600
Hi, I have LG 42LB5600 TV. When I power on without LED Strip, LED+ and LED- Voltage changing around 0 to 48 V just a few second but after about 4 sec it fixed to zero. I chassis LED- route and see 114 v diff in Drain of Q803 and LED+.
I test Q803 Transistor and it seems OK. The Gate Voltage is Zero and the transistor is off. I Check D803 and every part to BD9486F (IC801) but the Dimout Pin has 0V. I cant find problem. Can anyone help me?... -
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I have been looking for information for my tv for a week now. And today found a very informative post here in this forum. This forum looks amazing ! Happy to join !Leave a comment:
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Re: New Members - please post your introductions here
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Re: LG 42LB5600-UZ sound but no backlight
TV LG 42LB5600 has high led voltage that reason to burn LED Stripe.Leave a comment:
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