2-16
DIGITAL DISPLAY & MEDIA TRAINING MASTER
4-3. Humming/Clicking Noise
The unit is making a humming noise or a clicking noise.
Does the noise only
happen when a disc
is playing?
NO
YES
BD’s make a slight hum when playing discs.
A clicking noise or a noise interfering with audio may indicate a problem.
Try multiple discs. Multiple discs with the same issue
means the BD may need service or be professionally cleaned.
Check BD service for service instructions.
Does the noise happen
when the BD is turned on?
NO
Check to see if a disc is inserted into the BD and eject the disc.
A humming or clicking noise when the disc is not inserted
may be a cooling fan. Check OM to see if cooling fan is present.
If not, unit will need service. See BD service for service instructions.
Has the customer tried
multiple tapes and discs?
NO
YES
YES
If the issue only shows up on one disc, then the problem is
with that disc. Have the customer try multiple tapes or discs.
If the issue happens on multiple discs and tapes,
then ask the customer to try a lens or a head cleaner.
Has the customer
connected to another TV?
NO
Ask the customer to connect the product to another TV.
If the issue persists, try another set of cables. If the issue still persists,
then the issue is with the unit. The unit will need service.
Arrange service following proper procedure.
How are the cables
routed?
NO
Make sure cables are routed properly.
Make sure audio and video cables are routed to the same source
(if possible). Routed audio and video to separate products
can cause a bit of a delay between the devices as not all devices
will process audio and video signals at the same speed.
4-4. Audio/Video Out of Synch
The audio and video do not match up. People look to be talking, but their voices are delayed by a few seconds.
Summary of Contents for SoundPlate lab550h
Page 65: ...2 52 3 AUDIO PART 1 DSP I2C IC401 SPI_SCL IC401 SPI_DATA 6 7 6 7 ...
Page 66: ...2 53 4 AUDIO PART 2 DSP I2S M_LRCK M_BCK M_DATA0 8 9 10 M_BCK M_DATA0 10 8 9 ...
Page 67: ...2 54 5 HDMI PART 12 11 H_SDA H_SCL 11 12 ...
Page 82: ...2 84 2 83 2 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Page 83: ...2 86 2 85 3 FRONT P C BOARD 4 FRONT KEY P C BOARD TOP VIEW TOP VIEW BOTTOM VIEW BOTTOM VIEW ...
Page 87: ...3 4 1 Remove the Chassis Main Assembly Fig 5 Chassis Main Assembly Chassis Main Assembly ...
Page 90: ...3 7 1 Remove the 2 screws securing the KEY PCB 2 Remove the KEY PCB Fig 10 KEY 1 ...
Page 91: ...3 8 ...
Page 95: ...3 16 3 15 ...
Page 107: ...4 12 ...