Sony KV-27S46 tv has no picture, no sound, 4 flash diagnostic.
You ended our chat prematurely last week. All I want from you is to let me know if I cleared code 4 correctly for my TV and/or what part(s) I need to replace since you have access to the Sony data base. That is the main reason I contacted you in the 1st place. The clearing instructions you sent me was not for a KV-27S46 since it depicted a different vert out IC. Mine uses IC541 for vert out which I have replaced. Maybe the clear procedure is different also. If you do not contact me, you will get a bad review and my credit card company will refuse payment.
Larry11143 at firstname.lastname@example.org or email@example.com
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Re: sony KV-27S46 tv has no picture, no sound, 4 flash...
4 blinks Indicates For Your Exact Model To Replace D606 (P/N 871910818) SCR. Also Please Don't Take Out Your Anger For Your Broken Device On Me. Sony Knows Of This Problem As It Is Very Very Common So If You Want You Can Call Them And They Most likely Will Have Your Exact Fix.
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The key here is the standby light flashing. It should be flashing in a repeated count of flashes with a pause inbetween. Count the blinks and report that number here. This is a diagnostic code indicating the circuit that is having a problem. Armed with that info, we should be able to give you an idea of the problem and its solution.
The problem might come from the fuse inside was blow out. if you have a multimeter then open the rear cover. The fuse lays near the power cord. Take it out and use Ohm meter to check it connectivity. If it is no connectivity meaning the fuse was blow out. Replace a new one with the same value (Ampere and Voltage). If it does have connectivity, the problem needs technician to find out as it relates to many parts on the circuit board.
Can you please confirm the model number? The category is for KV-27S42 and you state in the title you have KV-27S46. Also, when getting the 4 blink code, do you see a horizontal line on the screen or nothing at all? The 4 blinks means no vertical sweep. This can be a bad vertical IC (what you changed already) or no power to the IC or even a bad capacitor in the same circuit. If you know how, check the supply voltage to the IC. If not present, we need to trace the supply line for that IC. I will need to consult the service manual to provide additional details. Please confirm the model so I get the correct part numbers etc.
check for an open resistor on the power supply, it is actually a fusible resistor, (white) if open, then check the converter, some sets have two separate and some have it as one. it will be on a heat sink on the power supply. if shorted then check for a shorted horizontal output transistor and repair cold solder joints on the horizintal drive transformer which is the real cause of this problem
There is a button on the remote labeled display that must be hit to remove the on screen display. You can use any Sony TV remote so you may want to check out GoodWill for a used one. Sony also has a universal available but it may be hard to find, maybe Radio Shack. There is no other way of turning off the OSD.
For the last week my TV has been going to a black screen for 10 seconds or so then the picture returns. It has been continual. Last night it stopped going to black screen, but now the standby light flashes 5 consecutive times and the color went haywire. A lot of red and everything that is suppose to be black is green.
I did a soft and hard reset with no success. What's wrong and is it worth fixing? Bought new in November 2002.