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Discussion Starter · #1 ·
Hey all, I'm new here but it was this particular thread that got me here. :)

I recently snatched up a free Sony KP-57WS510. My neighbors were giving it away. It was in working order for about a week. One night my daughter and I were watching Casper on Laserdisc. We fell asleep and the TV stayed on. When I woke in the morning and tried to turn it off/on I got the 6 red flashes from the diagnostic light.

Now, I know practically nothing except for the notion that I should probably purchase the parts myself and get someone to help me repair instead of a shop repair which price-wise is not really an option (veteran going back to school here).

I have a OEM remote coming tomorrow for the TV.

Would anyone here help me understand what my issue is and what I may need to fix it? My laserdisc machine is screaming at me to be played more and I want to comply, LOL.

Thanks in advance ..... Shawn

:praying:
 

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Hey all, I'm new here but it was this particular thread that got me here. :) I recently snatched up a free Sony KP-57WS510. My neighbors were giving it away. It was in working order for about a week. One night my daughter and I were watching Casper on Laserdisc. We fell asleep and the TV stayed on. When I woke in the morning and tried to turn it off/on I got the 6 red flashes from the diagnostic light. Now, I know practically nothing except for the notion that I should probably purchase the parts myself and get someone to help me repair instead of a shop repair which price-wise is not really an option (veteran going back to school here). I have a OEM remote coming tomorrow for the TV. Would anyone here help me understand what my issue is and what I may need to fix it? My laserdisc machine is screaming at me to be played more and I want to comply, LOL. Thanks in advance ..... Shawn :praying:
I can't help but hopefully someone will chime in to help! I wish I kept my laser disc player they were fun unfortunately I had a cheaper model and always had to flip the disks. I am glad DVD and blu rays are much cheaper.
 

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Discussion Starter · #4 ·
Re: Steve's KP57WS510 Project

Does anyone have pictures which depict the removal/reinsertion of boards needing repair? I DON'T want to screw anything up because I really like this TV.

It has great potential once it's fixed.
 

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Re: Steve's KP57WS510 Project

I would look at you tube, there might be something. What chip is it that you are looking for?
 

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Discussion Starter · #6 · (Edited)
Re: Steve's KP57WS510 Project

I would look at you tube, there might be something. What chip is it that you are looking for?
Well, I've got the 6 red blinks ...... SIX Blinks---No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis
function immediately. Check C515 & 516 and the jungle IC, IC206.

I wouldn't even know how to test voltages on things. I do have a service and operating manual. The ONLY thing I know for sure is that I no longer get a picture. I have a replacement power supply board, a digital reality board, and I have a tech repaired D board on the way.
 

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Re: Steve's KP57WS510 Project

Why are you changing all of those boards?

With the very high probablility of getting defective replacement boards, you may just complicate the problem. If you can't even check voltages, you should be getting the set to a professional.

However, if you have a power supply, change that first. If it does not fix the problem, put the old one back in and change one thing at a time.
 

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Your post has been moved to a dedicated thread for better forum organization and to make it more likely that users can respond specifically to your issue.
 

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Discussion Starter · #9 ·
Re: Steve's KP57WS510 Project

Why are you changing all of those boards?

With the very high probablility of getting defective replacement boards, you may just complicate the problem. If you can't even check voltages, you should be getting the set to a professional.

However, if you have a power supply, change that first. If it does not fix the problem, put the old one back in and change one thing at a time.
Well, I figured I wanted to keep the TV and I got the boards at reasonable prices. In the end, if not needed, I will have back up in case something bigger goes wrong in the future. Maybe this way I can better learn about such things by having extra boards .... good teaching tools right?

:)
 

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Discussion Starter · #10 ·
What is it on the power board that needs to be checked and what tells me it's bad? My neighbor has a voltage meter and offered his services to test it.

I have unseated the power board from the inside so it can be viewed.

Thanks ..... Shawn
 

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What needs to be checked is determined by doing troubleshooting like determining which voltages are missing or are not coming up when they are supposed to. You can check obvious things like fuses that might be open, or major semiconductors for shorts, but if you don't know how to interpret the circuit, these measurements can be misleading.

The main thing that goes out on these sets that ends their life are CRTs, and yours are likely getting near the end of their life. They can be expensive and replacement requires significant alignment.

If you have a power supply, again, I would try changing that. If you have to change the D board, that can be more tricky, and those are more likely to be defective. If you got them cheap, chances are they are recycled or rebuilt boards which are notoriously unreliable.

You could also have a HV distributor that is bad and get a 6x blink, IIRC, but it has been years since I repaired any of these or had Sony training.
 

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Discussion Starter · #12 ·
What needs to be checked is determined by doing troubleshooting like determining which voltages are missing or are not coming up when they are supposed to. You can check obvious things like fuses that might be open, or major semiconductors for shorts, but if you don't know how to interpret the circuit, these measurements can be misleading.

The main thing that goes out on these sets that ends their life are CRTs, and yours are likely getting near the end of their life. They can be expensive and replacement requires significant alignment.

If you have a power supply, again, I would try changing that. If you have to change the D board, that can be more tricky, and those are more likely to be defective. If you got them cheap, chances are they are recycled or rebuilt boards which are notoriously unreliable.

You could also have a HV distributor that is bad and get a 6x blink, IIRC, but it has been years since I repaired any of these or had Sony training.
What kind of voltages should I expect to find on good parts vs. bad parts? When I turn on TV I hear the clicking and a little buzz coming from the right side (if you're looking in from the back). Then it gives me the 6 blinks.

Thanks,

Shawn
 

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It depends on the part and its role in the circuit. You have to look at the schematic and/or circuit diagrams and labels on the board to find out. You also need to know something about each circuit and how it works.

A buzz from the right looking from the front or the back?

Power supplies can make a buzzing noise normally, but it should be faint. Louder buzzing usually indicates a power supply trying to drive a lower than normal impedance, or it could be a short in a CRT or high voltage component.
 

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Leaky HV transformer is a possibility. Or a shorted CRT. Could just be the power supply.
 

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Discussion Starter · #16 · (Edited)
It's ALIVE!!!!!

LOL. I replaced the Power Supply board and poof, my tv is back in action. Now, I have 2 boards to learn about and repair so that if I ever have the trouble again I have immediate back up. As longs as it's the 6 blinks error.

:)

Thanks for the advice. It is always appreciated.

Now I have to read the service manual to learn how to get my convergence back. It looks a lot harder than fixing the power supply.
 

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Discussion Starter · #17 ·
I found my problem. I went back to the D board and saw that I had the 3 plugs for the lamps in the wrong slots on the board. I switched them to their proper connections and whoosh, it fixed things and allowed me to do the manual convergence.

Apparently the power supply (something on it) was to blame. I will now be able to go back over the D n G boards to see what needs to be replaced, fix it, and keep them safe for future needs.

Thanks to all the people here doing these things and allowing us newbies to benefit from it.

:jump:
 
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