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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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RCA 52" Will not power up...
Hello,
I have an RCA 52" Projection unit. Model P52754AT, Chassis PTK178L2B, Mfg. Oct. 1996. The set will not power up. When the power button is pushed, the power LED comes on for a split second, and then goes back off. I have read that the high voltage splitter is a nuisance in these sets. I would test it by unplugging the lead, and powering up, but I need a schematic first. While looking at the set, a friend was messing around with some of the components in there. A resistor was broken in half. This resistor only had 3 color bands on it, red gold red. I cannot determine its value without the schematics for it. It is labeled on the board as R212. The board is mounted by itself separate from the power board. It was on some standoffs. I don't want to power on the set without this component in place. Could anyone please help me out with this. Any ideas are welcome. Thank You for your help. Dubby |
#2
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RCA 52" Will not power up...
"Dubby" wrote in message m... Hello, I have an RCA 52" Projection unit. Model P52754AT, Chassis PTK178L2B, Mfg. Oct. 1996. The set will not power up. When the power button is pushed, the power LED comes on for a split second, and then goes back off. I have read that the high voltage splitter is a nuisance in these sets. I would test it by unplugging the lead, and powering up, but I need a schematic first. While looking at the set, a friend was messing around with some of the components in there. A resistor was broken in half. This resistor only had 3 color bands on it, red gold red. I cannot determine its value without the schematics for it. It is labeled on the board as R212. The board is mounted by itself separate from the power board. It was on some standoffs. I don't want to power on the set without this component in place. Could anyone please help me out with this. Any ideas are welcome. Thank You for your help. Dubby Schematics are rather expensive, but shouldn't be nessesary for basic faults. Are you sure the middle band is gold? Or is it yellow? You may be able to remove the broken resistor, hold it together and measure the value with a meter. |
#3
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RCA 52" Will not power up...
Or stick one probe into the broken end...do the same with the other side and
add..... jak "James Sweet" wrote in message news:Id3Cb.86712$_M.455189@attbi_s54... "Dubby" wrote in message m... Hello, I have an RCA 52" Projection unit. Model P52754AT, Chassis PTK178L2B, Mfg. Oct. 1996. The set will not power up. When the power button is pushed, the power LED comes on for a split second, and then goes back off. I have read that the high voltage splitter is a nuisance in these sets. I would test it by unplugging the lead, and powering up, but I need a schematic first. While looking at the set, a friend was messing around with some of the components in there. A resistor was broken in half. This resistor only had 3 color bands on it, red gold red. I cannot determine its value without the schematics for it. It is labeled on the board as R212. The board is mounted by itself separate from the power board. It was on some standoffs. I don't want to power on the set without this component in place. Could anyone please help me out with this. Any ideas are welcome. Thank You for your help. Dubby Schematics are rather expensive, but shouldn't be nessesary for basic faults. Are you sure the middle band is gold? Or is it yellow? You may be able to remove the broken resistor, hold it together and measure the value with a meter. |
#4
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RCA 52" Will not power up...
Im sorry, the middle band looks to be silver, not gold. It is broken
completely in half, however, I did use a meter on it. I measured both side by themselves. Both of them added together is about 30 ohms. |
#5
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RCA 52" Will not power up...
I have taken the board completely out of the set. The resistor was
labeled R122, instead of 212. After turning the board over, I noticed that the board was burnt where this component was. I have found a local TV service center that said they would let me look through the schematics for this set. He also said that he would help as much as possible. That is quality service there... |
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