Electrotechnician: Samsung Home Theater System HT-X810 – How to troubleshoot

MICOM Initialization & Update

Micom Reset
During STANDBY mode , push the ‘Remote controller’s STOP’ button 5 Second.
If blue LED blinking, reset is finished.
Micom Update (Only for Flash Micom)
Back of the Set there is a slide hole for update JIG.
To update Micom, it need Computer, Rom Writer, USB Cables
Micom & MPEG Version Check
1) Play Disc or USB
2) Eject(Open) Disc , Push the Remote Controller “MENU” button.
3) Push the number ‘8’, ‘9’, ‘5’ in order, and push ‘Enter’ button.
4) Check the display or OSD
DVD flash initialize & Update method
1) Prepare HEX file at DISC or USB Memory
2) Insert Disc or USB Memory, and play. ‘Updating’ will be displayed. Set will be power off à on
3) The disc is automatically ejected. (If you use USB memory, detach USB memory)
4) During “No Disc” Displayed, push the stop button 5 seconds. After displayed ‘INITIALIZE’ power off
5) Finished.

Wireless Subwoofer Reset

Wireless Reset
1) Sub Woofer
During STANDBY mode , push the “Reset Button” which is located at the backside of the subwoofer.
Blue Led on
Push the button more then 5 seconds.
blue and red led are blinking commonly,
Red led turned off during push the reset button
Main SET
Push ‘Remote controller’s button 0,1,3,5
If RED LED blinking, reset is finished.

SMPS Protection Trouble shooting

The Condition of Power Protection Active

1 > Voltage of SMPS’s PVDD (+28V,CN2) is higher or lower than Standards
Normal Condition Voltage Range : PVDD(+28V,CN2) : about 28V
2 > Over-current occurs to AMP IC (Over-output or Output short – speaker wire short)
3 > AMP IC’s temperature exceed 150℃
4 > No supply voltage on GATE DRIVER (AMP IC – AMP PCB PCON2 OPEN)

SOUND - TROUBLE SHOOTING

If there is no sound, check the speaker wires and AMP PCB

1) Speaker wire connection (short - protection)

2) AMP IC Resistance (output channel)

(Caution: Do not connect the power cord during this test)

VIDEO - TROUBLE SHOOTING

If there is no video out, check ic and wires
1) Check the ACON1 (ANALOG VIDEO,COMPONENT OUT) AMP IC Resistance (output channel)
2) Check the video IC (for ANALOG)
3) Check the HDMI TX IC (for Digital HDMI video)
4) Check the HDMI connector HCON1