The two blinking lights in succession seem to spell a problem with the power transformer or AC ??? the code sheets online point to power supply ...any ideas if it is one or possibly more than one on the board?
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unplug the set---where smoke something has burned.
I would with back off have a look---look at high voltage transformer and that area of board and pay special attention to C509 (brown cap in front of high voltage transformer about 2 inches---it will be marked with that C509 on board.
If it is cracked or burnt it is bad---these fail a lot.
If the set needs to be worked on it has a lightbox---about 8 bolts removed and entire guts or chassis comes out in one piece--can be powered up out of the cabinet.
the circut that detects the bulb has been also failing in these sets
and the conversion chip that controls the picture , and the transformers are not putting out the full power they are supposed to.
this set will need to be tested to determine the exact cause or causes
When the power light comes on and then goes out, on the front of the set press both the MENU and INPUT buttons at the same time and hold them both in for at least 5 seconds and then release both buttons.
The power light will blink a 2 digit error code and repeat it at least 5 times.
The most common error will be 2 blinks, 2 blinks- a pause and then it will repeat it for a total of at least 5 times.
To get it to repeat this--you have to unplug the set, try to turn it on again and repeat the process.
The error codes are to try to narrow down where the problem is.
Let me know what you find and I will tell you what it means.
If this told you something you did not know rate this solution as very helpful as I do this here for free.
Decoding the number of beeps may be possible with the owner's guide but this type of problem is normally due to a failed power supply.
These are often mounted on separate boards located in the bottom of your set and can be identified by the much larger parts you see on the board and possibly its relationship to the AC cord coming in.
While these can be repaired, the cost of that will approach the cost of a new assembly.
Unfortunately, modern, more energy-efficient power supplies have some critical components that if bought cheap, don't last very long and frankly, 5 years isn't bad, I read of many dead within the first year.
It seems this is a self diagnostic function. the official sony codes are as follows
Five blinks - AKB circuit (automatic kine bias),
the timer/standby indicator blinks for about 30 seconds then goes to
the self-diagnosis function. Something is wrong with the video. Check
video out, Q705, 732, 761 and other components on the C board, also
check Q218, 219, 220 on the A board. In addition, unit could be in IK
blanking, try turning up screen slightly.
- No Horizontal (H STOP), no raster, goes to the blinking
self-diagnosis function immediately. Check C515 & 516 and the
jungle IC, IC206.
It sounds like you have a video input problem. Have you unhooked all inputs from the TV and tried to power it back on by itself? Hope this helps
a tv has two components, firstly a power supply produces high voltage to trigger a line transformer, in turn a transformer produces smaller voltages. firstly check if the ht is constantly been produced from a supply, if this is there than go to a line transformer, and check voltages at the output.
This is usually an indication of a failure in the scan amplifier sections. When the scan amplifiers or high voltage sections fail, the main power supply will usually also require servicing.
It is very common that the fly-back and high voltage multiplier and also the horizontal output stage fails in these sets. Along with it, the power supply will usually require to be serviced. On rare occasions, the vertical deflection amp fails.
The first thing to try is to unplug the unit from the wall for about 15 minutes,if this does not work you will need the assistance of a servicer to diagnose the problem,if you are familiar with tv service you can check the horizontal output transistor for a short,sometimes it fails for no reason and other times it goes bad along with the horizontal output transformer also know as flyback.Be careful if you decide to check this yourself.