You can check any 5v input to the microprocessor and sound is the audio IC whether have any voltage input.You can try to troubleshoot but please be careful.I don't have your model schematics but oher philip models.
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Hi our tv set need to be serviced. Here are some tips: 1. Open main fuse. The fuse is clean but interrupted. You can try replacing it with one o the same value. 2. Fuse Blown or blackened. Short in the rectifier bridge or in the switching transistor. Out of the power supply: supply line rectifier (100/150V) shorted.
If picture is Ok, and problem is only with sound output, There aremainly three chances for this fault. Either the audio output section do not get proper voltage, or the audio output IC has damaged or speakers to the TV has damaged.
Hello Check the speakers of the TV. If they are OK, check the voltage that comes to the audio output section from the power regualtor section. If the voltage is also OK or seem shorted, the audio output IC of your TV has damaged and the section should be repalce as card basis.
I worry the AV PCB was damage on your TV. But prior to get repaired /
replaced , first please check your audio line like wiring terminals/
If nothing problem there, you need to repair /replace the AV board.
As your complaint post indicates, there is a malfunction to its power amplifier output. Proper checking should be done to this stage by anu well experienced service technicians. Most of the components in the section carries high current, and proper care should be given whe repair this stage. Power output section of your amp is faulty, It switches on first without any problem, but after stabilisation, outputs the power to speakers [relay click indicates that]; then detects some short and shuts OFF. Thie is happening now. Get it repaired by any experienced service pwersonnel have experience in serivcing Hi-Watt amps. OK.
Hi, 3 times red light flashing is an error code that indicates problem in convergence output section, please check and replace convergence output chips and pico fuse nearby. Chips replacement in circuit board requires soldering work and local tv repair shop will help you if you are not familiar with soldering. Hope this will help. Thanks.
Check the input fuse first. If it is blown, there will be some short inside the power regulator circuit. Usually Sony sets uses STR regulated power supply. You can see this STR, and Ic, screwed onto a heatsink. Replace it with a same type and number. Before replacing the STR, check the diodes used in that section for damage, mainlu zener diodes. They might get shorted along the blowing of the STR. Check that section throughly before resoldering the new STR.
If any further assistance you needs, get me through Fixya. Ok.
please go according to procedure
1 isolate h/output section supply.
2 check power supply output is ok if not repaire it.
3 after power supply is ok
4 check hor osc, driver &output if problem repair it.
5 check for loose contact or print break.
6 connect supply to hor section. set will work fine.
ticking sound (like a Watch) coming from around the Flyback Transformer but I don't see a spark is called EHT voltage .
if eht voltage is ok
1 check filament is glowing or not if it is ok check voltages on crt.
2 if it is ok check luminance section in chroma section.
if filament is not glowing check for low eht due to hor section
check power supply output also.
detailed and professional assistance
1 open tv by removing back cover.
2 check power supply output.
3 if not ok,
4 disconnect h/ output supply
5 repair power supply by checking components specially reg.output &asso.parts
6 it power output becomes ok.
7 check hori section(osc,driver&output)if not repair it.
8 connect h/output supply.
check loose contact if any.
put on the set.