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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Sony KV-32S40 has audio but no picture
I have a Sony KV-32S40, which I purchased in December of 1998. I have
not experienced any problems with it until today. I turned the TV on today and everything was working fine as usual. After about 3-5 minutes the screen turned black but I still had audio. I turned the TV off for a couple of minutes and turned it back on. It appeared to be working fine until about 5 minutes later it did the same thing. The screen just turned black. I turned the channels to make sure that it wasn't the channel and turned on a different TV in the house to make sure that it wasn't the cable. I let the TV set all day before I tried turning it on again. After about a minute, the screen started getting a bunch of lines in it and the picture appeared to be shrinking from the bottom of the screen to the top of the screen. Then the screen went black again. I again let the TV set for a little while and tried it again. Now I don't even get a picture when the TV comes on. I still have audio and can even switch channels, but there is no picture. The red light on the front of the TV that says "Standby/Timer" just keeps flashing. I didn't hear any noises when the picture was going out. I talked to a repair shop today and they said that the picture tube is probably bad and that it would cost more to fix it than the TV is worth. I feel that I am a technical person but I have never worked on a TV before. Does anyone know what this sounds like or have any suggestions? |
#2
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Sony KV-32S40 has audio but no picture
Whatever you do, do not take that tv to the "repair shop" that you talked
with. There is no way they can determine that the picture tube is bad without doing proper diagnosis. From your description it does NOT sound like a picture tube problem. You need to take the tv into a reputable and good shop for proper diagnosis and repair. Given the description of the symptoms I would start by checking the vertical circuit for intermittent solder connections or weak capacitors, and then check for other common solder connection problems. Typical repair if you take the tv into a reputable shop around here varies between $90 and $125 total for 90% of the repairs on that size of tv set. David "BR" wrote in message om... I have a Sony KV-32S40, which I purchased in December of 1998. I have not experienced any problems with it until today. I turned the TV on today and everything was working fine as usual. After about 3-5 minutes the screen turned black but I still had audio. I turned the TV off for a couple of minutes and turned it back on. It appeared to be working fine until about 5 minutes later it did the same thing. The screen just turned black. I turned the channels to make sure that it wasn't the channel and turned on a different TV in the house to make sure that it wasn't the cable. I let the TV set all day before I tried turning it on again. After about a minute, the screen started getting a bunch of lines in it and the picture appeared to be shrinking from the bottom of the screen to the top of the screen. Then the screen went black again. I again let the TV set for a little while and tried it again. Now I don't even get a picture when the TV comes on. I still have audio and can even switch channels, but there is no picture. The red light on the front of the TV that says "Standby/Timer" just keeps flashing. I didn't hear any noises when the picture was going out. I talked to a repair shop today and they said that the picture tube is probably bad and that it would cost more to fix it than the TV is worth. I feel that I am a technical person but I have never worked on a TV before. Does anyone know what this sounds like or have any suggestions? |
#3
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Sony KV-32S40 has audio but no picture
Agreed, call around and find out which service is SONY authorized and
experienced in repairing these sets. Take it to them and ask for an estimate of repairs before getting in too deep, Then make a choice if you care to actually have it repaired. "David" wrote in message ... Whatever you do, do not take that tv to the "repair shop" that you talked with. There is no way they can determine that the picture tube is bad without doing proper diagnosis. From your description it does NOT sound like a picture tube problem. You need to take the tv into a reputable and good shop for proper diagnosis and repair. Given the description of the symptoms I would start by checking the vertical circuit for intermittent solder connections or weak capacitors, and then check for other common solder connection problems. Typical repair if you take the tv into a reputable shop around here varies between $90 and $125 total for 90% of the repairs on that size of tv set. David "BR" wrote in message om... I have a Sony KV-32S40, which I purchased in December of 1998. I have not experienced any problems with it until today. I turned the TV on today and everything was working fine as usual. After about 3-5 minutes the screen turned black but I still had audio. I turned the TV off for a couple of minutes and turned it back on. It appeared to be working fine until about 5 minutes later it did the same thing. The screen just turned black. I turned the channels to make sure that it wasn't the channel and turned on a different TV in the house to make sure that it wasn't the cable. I let the TV set all day before I tried turning it on again. After about a minute, the screen started getting a bunch of lines in it and the picture appeared to be shrinking from the bottom of the screen to the top of the screen. Then the screen went black again. I again let the TV set for a little while and tried it again. Now I don't even get a picture when the TV comes on. I still have audio and can even switch channels, but there is no picture. The red light on the front of the TV that says "Standby/Timer" just keeps flashing. I didn't hear any noises when the picture was going out. I talked to a repair shop today and they said that the picture tube is probably bad and that it would cost more to fix it than the TV is worth. I feel that I am a technical person but I have never worked on a TV before. Does anyone know what this sounds like or have any suggestions? |
#4
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Sony KV-32S40 has audio but no picture
Thanks for the advice!! I took it in to a different shop today. They
said it might be a week before the can get to it. I will post what they tell me. BR "Art" wrote in message ... Agreed, call around and find out which service is SONY authorized and experienced in repairing these sets. Take it to them and ask for an estimate of repairs before getting in too deep, Then make a choice if you care to actually have it repaired. "David" wrote in message ... Whatever you do, do not take that tv to the "repair shop" that you talked with. There is no way they can determine that the picture tube is bad without doing proper diagnosis. From your description it does NOT sound like a picture tube problem. You need to take the tv into a reputable and good shop for proper diagnosis and repair. Given the description of the symptoms I would start by checking the vertical circuit for intermittent solder connections or weak capacitors, and then check for other common solder connection problems. Typical repair if you take the tv into a reputable shop around here varies between $90 and $125 total for 90% of the repairs on that size of tv set. David "BR" wrote in message om... I have a Sony KV-32S40, which I purchased in December of 1998. I have not experienced any problems with it until today. I turned the TV on today and everything was working fine as usual. After about 3-5 minutes the screen turned black but I still had audio. I turned the TV off for a couple of minutes and turned it back on. It appeared to be working fine until about 5 minutes later it did the same thing. The screen just turned black. I turned the channels to make sure that it wasn't the channel and turned on a different TV in the house to make sure that it wasn't the cable. I let the TV set all day before I tried turning it on again. After about a minute, the screen started getting a bunch of lines in it and the picture appeared to be shrinking from the bottom of the screen to the top of the screen. Then the screen went black again. I again let the TV set for a little while and tried it again. Now I don't even get a picture when the TV comes on. I still have audio and can even switch channels, but there is no picture. The red light on the front of the TV that says "Standby/Timer" just keeps flashing. I didn't hear any noises when the picture was going out. I talked to a repair shop today and they said that the picture tube is probably bad and that it would cost more to fix it than the TV is worth. I feel that I am a technical person but I have never worked on a TV before. Does anyone know what this sounds like or have any suggestions? |
#5
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Sony KV-32S40 has audio but no picture
Hi BR,
I am having the same exact problem with my kv-32s40, how did you make out and the repair shop. AC |
#6
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Quote:
Achan, I just started experiencing the EXACT same problem on my kv-32s40 today! Wondering if I should take it to the shop - what did anyone find out about the cause of the problem and how to fix it (or the cost to fix it)? |
#7
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Is there any On Screen Display at all? Any indication of High Voltage being
generated? Has there been dfnative diagnostics preformed on theteles yet that you may post to this N/G? "myblubu" wrote in message ... achan Wrote: Hi BR, I am having the same exact problem with my kv-32s40, how did you make out and the repair shop. AC Achan, I just started experiencing the EXACT same problem on my kv-32s40 today! Wondering if I should take it to the shop - what did anyone find out about the cause of the problem and how to fix it (or the cost to fix it)? -- myblubu |
#8
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If you have the on-screen display, this means that there is high voltage,
and maybe proper biasing to all three electron-guns in the CRT. If there is no on-screen display, this means that there may not be high voltage, or there may be a bias or drive problem to the CRT. Also, a common problem with these sets is that a bad CRT will cause the set to have no picture. If there is a video drive failure on all three colour channels, there will also be no picture. An experienced tech should be able to diagnose the basic cause of this fault in a matter of about 15 to 30 minutes, unless the particular fault is complex. -- JANA _____ "myblubu" wrote in message ... achan Wrote: Hi BR, I am having the same exact problem with my kv-32s40, how did you make out and the repair shop. AC Achan, I just started experiencing the EXACT same problem on my kv-32s40 today! Wondering if I should take it to the shop - what did anyone find out about the cause of the problem and how to fix it (or the cost to fix it)? -- myblubu |
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