Mitsubishi Main Board Repair Service LT40164 and similar items

the common failure symptoms ???1. The ?Green Light of Death? (Endless Blinking) ?This is the most frequent symptom associated with this specific board. ?The Symptom: When you plug the TV in or try to turn it on, the green status LED on the front panel blinks continuously. ?The Result: The TV never actually turns on; the screen remains black, and the light just keeps blinking indefinitely (typically a fast green blink). The TV will not respond to the remote or power button. ?Cause: This indicates the main processor on the board is unable to boot the firmware or complete the ?handshake? with the other internal components. ?2. HDMI Input Failure ?Partial failure of the board often manifests as issues with the HDMI ports while the rest of the TV still functions. ?The Symptom: The TV powers on, but shows ?No Signal? on one or all HDMI inputs. ?Variation: Sometimes only specific HDMI ports fail (e.g., HDMI 1 works, but HDMI 2 and 3 do not). In other cases, the TV recognizes a cable is plugged in but cannot display the video or play the audio. ?3. Intermittent Shutdowns ?The Symptom: The TV turns on and works for a while (minutes or hours), but then shuts itself off randomly. ?Indicator: Unlike a lamp failure (which usually gives a Red LED code), a board failure might cause the TV to simply reboot or go dark without a specific error light pattern immediately following. PLEASE READ BEFORE PURCHASING THIS IS A MAIL-IN REPAIR SERVICE ONLY. You are NOT buying a new circuit board. INSTRUCTIONS: 1. Buy this service. 2. We will message you our SHIPPING ADDRESS. 3. You mail your broken board to us for repair. WHY CHOOSE US? We have proudly served the community for 19 years, delivering fast, reliable, and professional repairs. BOARD REQUIREMENTS The board we receive must be in good physical condition and must not have been tampered with or serviced before, i.e. no apparent traces of previous repairs should show. We will reject service to boards that someone has attempted repairing and you will still be charged for the return shipping and the/PayPal fees