Used
IC TDA11105PS [Syscon-VIF-Oscillator-Chroma jungle.] (Chinese KIT)
LOT
number: BSC 25-N0625
Universal Remote Control set-up codes for Hyundai
Universal Remote Control set-up codes for Hyundai
The
set do not starts up. The power LED
blinks continuously. A clear evidence;
that the fault is with main board circuit itself. The SMPS section circuit is OK. Otherwise, the power LED won’t light up.
On
checking further, a multi-meter test revealed that the Collector to Emitter
junction of the Horizontal Output Transistor [HOT] (D1651C] is Leakey.
Shows
about 3 Ohms DC resistances across these two terminals. Un-soldered it out from the circuit and
measured again. The leak confirmed.
The
+B voltage was OK. At bout 111.5VDC;
without load [w/o Horizontal Output Transistor].
Replaced
the Horizontal Output Transistor with its exact substitution (C5296); as D1651C
was not available. Switched ON the
set. OK.
The
raster (Blue screen) appeared. But; it
blinks occasionally; along-with a sparking noise.
On
further checking; I found that the EHT cap (Boot) has burned, and causes
sparking.
Replaced
this Silicon Rubber Boot with a new one.
Switched
ON the set. No other problem detected.
Tuned
in an on-air program. Perfect picture.
Attention:
Before you unclip the EHT boot, make
sure that the storage voltage at the final Anode has been discharged fully;
otherwise severe shock hazard be the result.
Be
sure that there is no loose soldering to the free-wheeling capacitor; connected
between Collector terminals of the Horizontal Output Transistor to Ground.
[0.01MFD – 1.6KV]. Either this capacitor
is open; or any of its solder terminals [2 of it] has loose solder, no doubt,
the Horizontal Output Transistor will get damaged; at the instant we switch the
set ON.
CLICK ON THE PICTURES TO MAGNIFY
UNIVERSAL REMOTE CONTROL SET-UP CODES
0025 0031 0101 0194 0658 0673
0680 0697 0758 0777 0791 0798
