DAMAGE REPAIR TELEVISION EXPERIENCE

BOOT UP DAN SELF TEST

  The author will try to explain the bootup sequence. Bootup is a tv operation stages, from death to operate normally. Do not be surprised if the chassis tv sharp picture taking a little longer TDA93xx appearance ...., because ic muter-muter program first (cool selftest).The stages in self test (correction please) as follows:1. Regulator to operate properly -> the standby voltage (3.3 V), the crystal oscillator ic-work program to

    give the pulse / clock ic program.2. Program reset, reset is controlled by a reset IC (PST573, the Goldstar / KIA70 other brands), 

    the pin 60.

3. After reset, load the program / EEPROM read (retrieve the data service). If it fails to read / load -> 

    protectionism.4. After reading the EEPROM, the program will try to turn on the TV (power on), beginning with the

     regulator turned to the ON position (full 115V B +), followed by the operation of jungle osc (horizontal

     and vertical). For a while, the video signal in a state of MUTE.5. After the flyback transformer work, ic program (with the help of a zener, diode-diode), censoring / check

     vital voltages. If abnormalities are found, will tv protectionism.6. Checking process is followed by checking the voltage input / output amplification (vertical out, X-ray, etc.).7. The next stage is to check the signal / sync, entered and processed video signal (current, output to the tube

     / video drive is still in MUTE -> no picture / raster), the goal is to detect and ensure that osc hor and vert

     sync the video / raster. If the sync fails, the tv will protectionism.8. Testing digital / data service. Previously, the tv is turned on by setting stored in the data service     

    (EEPROM), if the data can not be set, tv will protectionism. for example. NICAM on the data set at 1 

    (NICAM = 1) when the circuit / no circuit NICAM tv, tv will protectionism. This stage is the stage of 

    checking the digital data (internal).9. Checking external digital (peripheral, outside IC), the program will check the existence of additional

    peripheral/alat2 outside the IC via the data bus (SDA and SCL, using the I2C protocol), then set the 

    equipment in accordance with data stored in the EEPROM. Wonder at the sharp, peripheral / external 

    devices such as: Tuner (PLL), AN5891K (SoundProcessor) and M52797SP (AV switch), if the 

    communication to / from external perangkat2 failed / interrupted, the tv will protectionism.10. Once everything is OK, the video signal in unmuted (shown).11. During the operation, ic program always monitors all protection doors.For stage 5 and 6 above, using the pin protectionism pin 8 (normally About a 3.2 v) the IX3386 and IX3410.CODE blinkTo find out where the error / protectionism is happening, complete mill sharp TVnya products with code blinking. Blink code can be known from the long / short and the number of LED indicator lights blink. Rather than measuring the length of dizziness / short blink, it is more easily calculated kedipannya number. Blink code indicated by:1. Code using a flashing red LED, which flashes green if the code might not blink.2. As an illustration (use your imagination), blink code 4 will be indicated as follows: the lamp light is on 4 times (the length of 200ms kira2 every turn - kira2 second quarter -), then pause / off kira2 half a second (400ms) - lit / flashing again 4 times -> pause / off kira2 half a second (400ms) -> blink again 4 times ........ and so on.While this type of code along with the type of damage kedipnya as follows (based on the author's experience), as follows:• Wink first time: a data bus error may be caused to fail in a reading program memory or data bus 

   (SDA, SCL).• Wink three times: Jungle (osc horizontal, vertical), could also be caused by x-ray (ABL).• Wink 4 times: Synchronization failed, video / raster is not detected, Vif. AV switches need to be considered.• Wink 6 times: Internal peripherals, NICAM, SIF. Due to a data service that is not appropriate.• Wink 7 times: internal settings, format signal, setting the decoder. Due to a data service that is not appropriate.• Wink 8 times: Tuner (failed to set the tuner or tuner frequency is not detected), can also be caused by external peripherals (eg AN5891K, M52797SP) because of disrupted bus.note: for flashing 2 and 5 (or other flashing), the authors have never encountered (if anyone ever come across please contribute).REPAIR TIPS Chassis is1. If the tv is turned red immediately (without flashing), check the transformer FB, vital tensions, R625 

    (SMD) value is 180K, from the 180V line.2. If you blink 1 s / d 4, the steps: operation of all solder, if necessary re-soldered. More on R and C SMD

    under vertical ic. If not effective, there is a defective component surrounding the Jungle series, which need 

    to be checked pin: pin 21 (Vdrive A), pin 22 (VdriveB), pin 33 and its sequence hor drive. Stresses the 

    vital need to also be checked.3. If blinking 4 and above, enter it into service mode. TV turns on and had to check the voltages. If

    necessary 

    change the service setting mode. (Write once setting first, before making any changes).4. If the blinking code changes, for example, when turned on flashes 8 times then turned off, turned on again it'

    turned kedipnya 4 times, which need to be checked is the data bus lines (SDA, SCL). At Wonder,

    check out two 5v zener (D302, D303) located close to AN5891.5. Before you intend to soldering, you should first check the data service modes.6. By understanding the stages of Self Test, it will be easier to know the location of the damage.
    I have a problem with sanyo tv CG29EF2S, each time the plug into the socket crt tv crt tube directly 

    standby.padahal good condition, good occasionally, but more protecknya than good, a nice picture when

    there is not normally a problem. please dong who know the solution ..... before I say many thanks!
    've Ever changing FBTnya cb Zulmi pack? I've only protect service Sanyo 29 FBTnya who wrote a 

    small fire, so he protect / FBT Direct standby.GAnti tocker know.