Dimming picture Hello, i have an issue with the picture dimming and then go back to bright picture. Any suggestions ?

If the brightness on your TV changes automatically (randomly dims and brightens), you may need to adjust the:

• Eco Sensor function.
- And / Or -
• Energy Saving function.
The Eco Sensor and Energy Saving functions adjust the brightness of the TV to reduce power consumption.

• When you set the Energy Saving function to Auto, the TV changes its brightness automatically depending on what you are watching on the TV.
• When you set the Eco Sensor to On, the TV changes its brightness automatically depending on the brightness of the room.

Does the radio play ? Are any other back lighting components not lighting ? Does the HVAC control panel light up ? You probably need new radio !
The second interior lighting group includes lamps which may be dimmed. This group may use a combination of vacuum fluorescent (VF) illumination, LED illumination and incandescent lamps.
When the ignition switch is turned to the RUN position, the radio VF display turns ON at maximum brightness. When the park lamps are ON, all incandescent and LED back lighting turn ON at the dimming level indicated by the instrument panel (I/P) dimmer switch. At the same time all VF displays dim to match the indicated dimming level. The panel dimmer switch potentiometer is an input to the body control module (BCM). When the driver selects a dimming setting by moving the I/P dimming switch potentiometer, all incandescent back lighting lamps are provided with a specific voltage. When the I/P dimmer switch is moved from MIN to MAX, all VF displays, as well as all incandescent back lighting respond from minimum intensity to maximum brightness in response to the I/P dimmer switch.

Dose

The problem is probably at your TFT/LCD panel. Find to know by connecting your Notebook to another monitor is it dimming or not

Sounds like you have a backlight problem. I would suggest turning on the set, dimming the lights in the room. Take a bright flashlight and shine it on the screen, do you see a faint picture?

If it is a tubed projector, it could be tired tubes. The EHT unit may be faulty. If it is a DLP or LCD then it could be a failing lamp. Job to tell with no information, sorry.

If it is a tubed projector, it could be tired tubes. The EHT unit may be faulty. If it is a DLP or LCD then it could be a failing lamp. Job to tell with no information, sorry.

If you put a CFL in it, they are not dimmable. If it is a standard light bulb, it should not affect the dimmer.

What is the model of your Hitachi and how old is it? If is a DLP you lamp is going to need replaced.

Hello Miggs,

This sounds like a color wheel or cooling fan issue. I would take the set back and have them check the color wheel and fan assemblies.

I hope this helps
Thank you,
Shuttle83