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#1
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TV porblem
Need some help. I have a Phillips 32" model TS3258C1 that quit after a pop sound I do work on copiers so I have some idea of what happened (also smells like burnt transformer or something similar. It's 11:00 PM in Chicago now so I haven't opened the unit up yet. I was wonder if anyone is familiar with some weakness in this TV that might save me some trouble shooting time.
Thanks Frank |
#2
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Frank wrote:
Need some help. I have a Phillips 32" model TS3258C1 that quit after a pop sound I do work on copiers so I have some idea of what happened (also smells like burnt transformer or something similar. It's 11:00 PM in Chicago now so I haven't opened the unit up yet. I was wonder if anyone is familiar with some weakness in this TV that might save me some trouble shooting time. Thanks Frank Hi, Sounds like you lost high voltage going to CRT anode. Open up the set discharge the HV circuit and sniff around to see if anything cooked. |
#3
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In article ,
"Frank" wrote: Need some help. I have a Phillips 32" model TS3258C1 that quit after a pop sound I do work on copiers so I have some idea of what happened (also smells like burnt transformer or something similar. It's 11:00 PM in Chicago now so I haven't opened the unit up yet. I was wonder if anyone is familiar with some weakness in this TV that might save me some trouble shooting time. Thanks Frank I always take my TV porblems over to sci.electronics.repair. But don't go over there claiming that your experience with copiers is relevant, unless you can back up your statement that you have "some idea" what might be wrong. They might challenge that assertion. |
#4
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On Mon, 14 May 2007 20:57:48 -0700, Smitty Two
wrote: I always take my TV porblems over to sci.electronics.repair. But don't go over there claiming that your experience with copiers is relevant, unless you can back up your statement that you have "some idea" what might be wrong. They might challenge that assertion. Oh yes it helps. It means he knows how to open up machines without killing himself, without causing more damage and knows what to look for if given directions. He will also know how to put things back together. Always unplug the TV when working on it. Look around for any smoked part. You likely have a single board PCB that won't be repairable by other than the dealer's agent. It will cost you at least $100 for the shop to look at it and, with even the tinniest fix, end up costing more than a new TV. They aren't interested in making repairs at this level (smoked part). It is either a whole board swap or a lot of shop storage while waiting for a unsourceable part to come in. In any case service guys don't make parts repairs any more as how do you unsolder and resolder a component that is smaller than a pen nib point. How do you place the multimeter probes on micro-traces protected by a conformal plastic coating to measure anything in the first place to troubleshoot the failed part? Next power it on and see if there is any glow in the CRT gun. The first obvious place to test will be the fuse and then test the output voltrages from the transformer. Check also the Vcc of a few ICs, resistors and caps. With the power on use a wood dowel (or something similar) and move the wiring around to see if anything is alive. Go from there. The only two fixes you can do is to clean the parts and reseat them firmly. With a bit of luck your problem may be a cold solder. It will be an educational experience. Its unlikely a smoked TV is worth repairing if a new one costs under $400. Don't worry about being zapped. Its unpleasant but its not even as powerful as a taser. |
#5
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"Frank" wrote in message ... Need some help. I have a Phillips 32" model TS3258C1 that quit after a pop sound I do work on copiers so I have some idea of what happened (also smells like burnt transformer or something similar. It's 11:00 PM in Chicago now so I haven't opened the unit up yet. I was wonder if anyone is familiar with some weakness in this TV that might save me some trouble shooting time. Thanks Frank |
#6
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First you have to do as someone else said - discharge the HV circuitry.
If you don't know what that is, you can kill yourself with the 10,000 or so volts that are inside the box. Don't open the TV. In the unlikely event you can find a place that repairs TV's, don't be surprised to hear it's not worth fixing. Keep in mind that all analog TV transmitters must be turned off on 3/1/09 by FCC mandate. That alone means you have just under 2 years before that analog TV won't work. (yes I know about the converter boxes, but why bother?) "Frank" wrote in message ... Need some help. I have a Phillips 32" model TS3258C1 that quit after a pop sound I do work on copiers so I have some idea of what happened (also smells like burnt transformer or something similar. It's 11:00 PM in Chicago now so I haven't opened the unit up yet. I was wonder if anyone is familiar with some weakness in this TV that might save me some trouble shooting time. Thanks Frank |
#7
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On Wed, 16 May 2007 21:30:28 -0600, "Bob M." wrote:
First you have to do as someone else said - discharge the HV circuitry. If you don't know what that is, you can kill yourself with the 10,000 or so volts that are inside the box. Don't open the TV. In the unlikely event you can find a place that repairs TV's, don't be surprised to hear it's not worth fixing. Keep in mind that all analog TV transmitters must be turned off on 3/1/09 by FCC mandate. Terrestrial broadcast in particular frequency ranges. Don't forget the many sources of analog video that AREN'T affected by that mandate like cable, satellite box, VCR, DVD, video game, security camera, etc... That alone means you have just under 2 years before that analog TV won't work. (yes I know about the converter boxes, but why bother?) "Frank" wrote in message ... Need some help. I have a Phillips 32" model TS3258C1 that quit after a pop sound I do work on copiers so I have some idea of what happened (also smells like burnt transformer or something similar. It's 11:00 PM in Chicago now so I haven't opened the unit up yet. I was wonder if anyone is familiar with some weakness in this TV that might save me some trouble shooting time. Thanks Frank -- Mark Lloyd http://notstupid.laughingsquid.com "Unlike biological evolution. 'intelligent design' is not a genuine scientific theory and, therefore, has no place in the curriculum of our nation's public school classes." -- Ted Kennedy |
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