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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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Zenith TV - no red color
I have a Zenith tv (model Z19A02) that's about 11-13 years old. Today,
the red color went out suddenly. There was no indication that anything was wrong. Everything else seems to be normal. Does anyone have any idea what the problem(s) could be? Would it be worth taking it in to be repaired and how much might it cost to be repaired? |
#2
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Zenith TV - no red color
On Jul 8, 8:57 pm, "Mike S." wrote:
I have a Zenith tv (model Z19A02) that's about 11-13 years old. Today, the red color went out suddenly. There was no indication that anything was wrong. Everything else seems to be normal. Does anyone have any idea what the problem(s) could be? Would it be worth taking it in to be repaired and how much might it cost to be repaired? Likely the walk-in cost of the repair will exceed the cost of a new flat-screen 19" TV these days. Sadly. I have seen such go for less than $100. I will, however, ask a silly question: You have gone over all the controls and suchlike? Have there been any sudden impacts? Peter Wieck Wyncote, PA |
#3
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Zenith TV - no red color
At that age it may be the crt, connections in the video circouts, or other
devices within the processing circuits. May be worth while offing it and getting something more updated. wrote in message ps.com... On Jul 8, 8:57 pm, "Mike S." wrote: I have a Zenith tv (model Z19A02) that's about 11-13 years old. Today, the red color went out suddenly. There was no indication that anything was wrong. Everything else seems to be normal. Does anyone have any idea what the problem(s) could be? Would it be worth taking it in to be repaired and how much might it cost to be repaired? Likely the walk-in cost of the repair will exceed the cost of a new flat-screen 19" TV these days. Sadly. I have seen such go for less than $100. I will, however, ask a silly question: You have gone over all the controls and suchlike? Have there been any sudden impacts? Peter Wieck Wyncote, PA |
#4
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Zenith TV - no red color
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#5
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Zenith TV - no red color
On Jul 9, 10:09 pm, "Mike S." wrote:
The TV seems to be working normally now. It was turned off for about seven hours and when it was turned back on in the morning, everything was normal. I wonder if maybe it overheated? That is a safe bet if it came back afterwards. I expect you might have a single component on one of the boards that does not like heat. Troubleshooting it might be a bear unless you are familiar with the circuit and could go right to the general location of the 'red' section on the board. If it starts to happen sooner and sooner and at ever-lower temperatures, that would be indicative of a failing part. Look at it another way... if it limits your use of the television somewhat, that is not a bad thing, is it? Peter Wieck Wyncote, PA |
#6
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Zenith TV - no red color
wrote in message ups.com... On Jul 9, 10:09 pm, "Mike S." wrote: The TV seems to be working normally now. It was turned off for about seven hours and when it was turned back on in the morning, everything was normal. I wonder if maybe it overheated? That is a safe bet if it came back afterwards. I expect you might have a single component on one of the boards that does not like heat. Troubleshooting it might be a bear unless you are familiar with the circuit and could go right to the general location of the 'red' section on the board. If it starts to happen sooner and sooner and at ever-lower temperatures, that would be indicative of a failing part. Look at it another way... if it limits your use of the television somewhat, that is not a bad thing, is it? Peter Wieck Wyncote, PA This is a perfect one for the novice to practice with. Poking around with a plastic stick (bic pen works) with the set on can usually track down this sort of issue. |
#7
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Zenith TV - no red color
There may be three descrete video driver devices near the Video Jungle IC.
Probable that one of the devices has failed. Easy to check without any current attached to the tele, check each one with your DMM. The defective device will definately have different f/r resistance readings. "James Sweet" wrote in message news:_s_ki.5625$475.3381@trndny04... wrote in message ups.com... On Jul 9, 10:09 pm, "Mike S." wrote: The TV seems to be working normally now. It was turned off for about seven hours and when it was turned back on in the morning, everything was normal. I wonder if maybe it overheated? That is a safe bet if it came back afterwards. I expect you might have a single component on one of the boards that does not like heat. Troubleshooting it might be a bear unless you are familiar with the circuit and could go right to the general location of the 'red' section on the board. If it starts to happen sooner and sooner and at ever-lower temperatures, that would be indicative of a failing part. Look at it another way... if it limits your use of the television somewhat, that is not a bad thing, is it? Peter Wieck Wyncote, PA This is a perfect one for the novice to practice with. Poking around with a plastic stick (bic pen works) with the set on can usually track down this sort of issue. |
#8
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Zenith TV - no red color
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