10TV022
AZ-1N_3A-2, AZ-1N_5-0, AZ-1N_5-2 Chassis BC
Subject IRIS
No Picture or Audio (HDMI) / MPEG Blocking / Resetting
SYMPTOM
One of the following symptoms may occur.
Issue IRIS code
HDMI inputs: No picture or audio in any resolution, or failing only at some resolutions. Sometimes the
behaviour worsens when the set has been working for several minutes (heated IC4000).
F310
F510
MPEG blocking: Very big blocking noise appears at either MPEG2 or MPEG4/AVC/H.264
digital RF streams. 134A
Set reset: Set is being reset from time to time, especially when changing between digital channels. 211B
CAUSE
Due to a low voltage level of the 1V2_CORE power rail, the IC4000 may behave abnormally.
SOLUTION
If one of the symptoms occurs, replace resistors R6007 and R6012. Refer to the pictures below for the exact
location of both resistors.
IMPORTANT: Changes must be applied to Main Board A-1767-672-A only.
Ref. Old description Old part number New description New part number
R6007 RES, Chip 1.8 K 1-208-893-11 RES, Chip 2K7 1-208-897-11
R6012 RES, Chip 10K 1-208-911-11 RES, Chip 2K7 1-208-897-11
