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Full Circuit

Full Circuit

Elegant Solutions to Difficult Problems

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Home >> Blog

Fixing Annoying Blue Standby Lights

JVC LT-39C740

For reasons that escape me there seems to a trend for standby lights
on home electronics to be blue "searchlights". This "feature" is
especially annoying when the electronics are in a bedroom or the home
is a one room flat for that matter. Some manufacturers helpfully
allow these to be turned on, but not all, and not on the JVC
LT-39C740 I recently bought from Currys.

A bit of black will fix the problem but often, like on the LT-39C740,
the same window for the blue light is also the window for the remote
control sensor so the black tape solution also disables the remote
control. However, with a bit a lateral thinking there is a solution.
Remote controls use infra-red so adding a filter to allow infra-red
only is another solution. The trend for using blue LEDs helps now. A
red filter will likely extend down to infra-red but certainly block
blue light.

Luckily Quality Street chocolates have a transparent wrapper that is
a nice deep red. I found that 2 layers of this still allowed the
remote control to work from across the room while reducing the blue
light to near zero. Pulled tight around the square block that
contains the blue LED and remote sensor and secured with a bit of
sellotape round the back, out of sight, the fix is near invisible.
Only the very observant would notice the the square block that
contains the blue LED and remote sensor is purple black rather than
the same black as the rest of the plastic surround.

A free fix and you get to eat the chocolate. What could be better?

Tags: 

  * Blue LED
  * Standby
  * Home Electronics

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