Hi all. I’ve had this Hisense 55R6040G tv for about 2 years now and all of a sudden the brightness has drastically fallen. The backlight still comes on but won’t change brightness. It appears as if it’s set to like 30 percent instead of 100. If I change the the brightness to lower levels it will get darker, but if I increase it after 30 percent it doesnt get any brighter. I’m hesitant to think the LEDs are bad as the screen seems evenly lit but just dim.I’ve done all the power cycling tricks and even let it sit for 3 hours unplugged. Factory reset. Even went into the secret menus to up the brightness with no success. What do you experts think?
=== Update (02/27/2023) ===
I just took apart the unit and it appears that 2 capacitors are bulging a slight bit which may be the cause https://imgur.com/a/m7IJH4t when comparing to another image from someone selling the main board it looked normal and not bulged.
[image|2876045]
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=== Update (03/07/2023) ===
Replacing the Capacitors Fixed the dimming issue. It appears the affect the R6 series of the Hisense TV’s
The Capacitors are 10uF 350v capacitors
If your board looks like this which is shared between the R6 series and potentially other series then this will fix your issue. https://imgur.com/a/4jYFaFU
Hi all. I’ve had this Hisense 55R6040G tv for about 2 years now and all of a sudden the brightness has drastically fallen. The backlight still comes on but won’t change brightness. It appears as if it’s set to like 30 percent instead of 100. If I change the the brightness to lower levels it will get darker, but if I increase it after 30 percent it doesnt get any brighter. I’m hesitant to think the LEDs are bad as the screen seems evenly lit but just dim.I’ve done all the power cycling tricks and even let it sit for 3 hours unplugged. Factory reset. Even went into the secret menus to up the brightness with no success. What do you experts think?
=== Update (02/27/2023) ===
I just took apart the unit and it appears that 2 capacitors are bulging a slight bit which may be the cause https://imgur.com/a/m7IJH4t when comparing to another image from someone selling the main board it looked normal and not bulged.
[image|2876045]
+
+
=== Update (03/07/2023) ===
+
Replacing the Capacitors Fixed the dimming issue. It appears the affect the R6 series of the Hisense TV’s
+
+
The Capacitors are 10uF 350v capacitors
+
+
If your board looks like this which is shared between the R6 series and potentially other series then this will fix your issue. https://imgur.com/a/4jYFaFU
Hi all. I’ve had this Hisense 55R6040G tv for about 2 years now and all of a sudden the brightness has drastically fallen. The backlight still comes on but won’t change brightness. It appears as if it’s set to like 30 percent instead of 100. If I change the the brightness to lower levels it will get darker, but if I increase it after 30 percent it doesnt get any brighter. I’m hesitant to think the LEDs are bad as the screen seems evenly lit but just dim.I’ve done all the power cycling tricks and even let it sit for 3 hours unplugged. Factory reset. Even went into the secret menus to up the brightness with no success. What do you experts think?
=== Update (02/27/2023) ===
+
I just took apart the unit and it appears that 2 capacitors are bulging a slight bit which may be the cause https://imgur.com/a/m7IJH4t when comparing to another image from someone selling the main board it looked normal and not bulged.
-
I just took apart the unit and it appears that 2 capacitors are bulging a slight bit which may be the cause https://imgur.com/a/m7IJH4t when comparing to another image from someone selling the main board it looked normal and not bulged.
Hi all. I’ve had this Hisense 55R6040G tv for about 2 years now and all of a sudden the brightness has drastically fallen. The backlight still comes on but won’t change brightness. It appears as if it’s set to like 30 percent instead of 100. If I change the the brightness to lower levels it will get darker, but if I increase it after 30 percent it doesnt get any brighter. I’m hesitant to think the LEDs are bad as the screen seems evenly lit but just dim.I’ve done all the power cycling tricks and even let it sit for 3 hours unplugged. Factory reset. Even went into the secret menus to up the brightness with no success. What do you experts think?
+
+
=== Update (02/27/2023) ===
+
+
I just took apart the unit and it appears that 2 capacitors are bulging a slight bit which may be the cause https://imgur.com/a/m7IJH4t when comparing to another image from someone selling the main board it looked normal and not bulged.
Hi all. I’ve had this Hisense 55R6040G tv for about 2 years now and all of a sudden the brightness has drastically fallen. The backlight still comes on but won’t change brightness. It appears as if it’s set to like 30 percent instead of 100. If I change the the brightness to lower levels it will get darker, but if I increase it after 30 percent it doesnt get any brighter. I’m hesitant to think the LEDs are bad as the screen seems evenly lit but just dim.I’ve done all the power cycling tricks and even let it sit for 3 hours unplugged. Factory reset. Even went into the secret menus to up the brightness with no success. What do you experts think?