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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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RCA TV/VCR combo vertical problem
RCA 27" Model T25001GY, chassis B4UY91RVT
Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#2
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RCA TV/VCR combo vertical problem
Look for dry solder joints in the Vertical section.
Get that Magnifier out....You will find them with that. kip -- "Watch the return E-Mail addy its false" "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#3
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RCA TV/VCR combo vertical problem
DV:
Don't keep "nursing" this along. If you wait to have it fixed and continue operating the unit, the repair shop price will be much higher because of additional failed components. Right now, the problem (as john's / kip's) reply post suggested, is most likely caused by dry, cracked or otherwise faulty solder joints in the vertical deflection circuitry..... and if you take it to a repair shop right away it can probably be repaired fairly cheaply. Don't waste your money and time purchasing schematics, they will not include a step by step troubleshooting and repair procedure for this type of problem...... and if you feel you need a schematic to locate the faulty area of the circuitry then you probably should just take it to a repair shop for a proper and safe repair. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------- "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#4
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RCA TV/VCR combo vertical problem
Thanks for the tip. Did see some suspect joints. Unit currently under test
after resoldering. Didn't know if there were one or more capacitors in the vertical section were known to be particularly troublesome. DV "john" wrote in message .. . Look for dry solder joints in the Vertical section. Get that Magnifier out....You will find them with that. kip -- "Watch the return E-Mail addy its false" "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#5
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RCA TV/VCR combo vertical problem
Thanks for the response. I appreciate what you are saying about the repairs.
While I don't a lot of experience in consumer electronic repairs, TV's or otherwise, I do have expertise in electronics repair in general because of the work I've been doing for the past 20+ years. Having said that, I must say that I have a lot of respect for the persons in your profession who could quickly look at this set and diagnose it. I don't know what you consider a "cheap" repair, but I do know that I don't want to put $100 into. This particular repair shouldn't be that complex based on the symptoms and the responses I've received so far. Also, I'm interested in at least trying to repair it myself because I am in the field. That's why I'm on usenet looking for clues. Best regards, DV P.S. I don't have any schematics actually ordered yet and probably won't. "Sofie" wrote in message ... DV: Don't keep "nursing" this along. If you wait to have it fixed and continue operating the unit, the repair shop price will be much higher because of additional failed components. Right now, the problem (as john's / kip's) reply post suggested, is most likely caused by dry, cracked or otherwise faulty solder joints in the vertical deflection circuitry..... and if you take it to a repair shop right away it can probably be repaired fairly cheaply. Don't waste your money and time purchasing schematics, they will not include a step by step troubleshooting and repair procedure for this type of problem...... and if you feel you need a schematic to locate the faulty area of the circuitry then you probably should just take it to a repair shop for a proper and safe repair. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------- "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#6
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RCA TV/VCR combo vertical problem
DV:
If no defective parts are involved this straight-forward repair at many service shops could be about $50 or even less...... and it is probably unlikely that any of the caps are bad because the picture would not "usually" be instantly good, then bad, then good again.... as all of the replies have indicated, it is probably defective solder connections near and around the vertical deflection circuitry and/or the flyback derived B+ supply to the vertical deflection... faulty solder joints are usually near and around the high heat producing parts.... chips, transistors, diodes, power resistors, etc. -- Best Regards, Daniel Sofie Electronics Supply & Repair --------------------- "DV" wrote in message news Thanks for the response. I appreciate what you are saying about the repairs. While I don't a lot of experience in consumer electronic repairs, TV's or otherwise, I do have expertise in electronics repair in general because of the work I've been doing for the past 20+ years. Having said that, I must say that I have a lot of respect for the persons in your profession who could quickly look at this set and diagnose it. I don't know what you consider a "cheap" repair, but I do know that I don't want to put $100 into. This particular repair shouldn't be that complex based on the symptoms and the responses I've received so far. Also, I'm interested in at least trying to repair it myself because I am in the field. That's why I'm on usenet looking for clues. Best regards, DV P.S. I don't have any schematics actually ordered yet and probably won't. "Sofie" wrote in message ... DV: Don't keep "nursing" this along. If you wait to have it fixed and continue operating the unit, the repair shop price will be much higher because of additional failed components. Right now, the problem (as john's / kip's) reply post suggested, is most likely caused by dry, cracked or otherwise faulty solder joints in the vertical deflection circuitry..... and if you take it to a repair shop right away it can probably be repaired fairly cheaply. Don't waste your money and time purchasing schematics, they will not include a step by step troubleshooting and repair procedure for this type of problem...... and if you feel you need a schematic to locate the faulty area of the circuitry then you probably should just take it to a repair shop for a proper and safe repair. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------- "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#7
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RCA TV/VCR combo vertical problem
Thanks Daniel,
There was one area in the deflection circuitry where the board was discolored due to heat. I made sure to hit all of those points. Appreciate the tip about the B+. Unit currently OK after 6+ hours....we'll see. Best regards, DV "Sofie" wrote in message ... DV: If no defective parts are involved this straight-forward repair at many service shops could be about $50 or even less...... and it is probably unlikely that any of the caps are bad because the picture would not "usually" be instantly good, then bad, then good again.... as all of the replies have indicated, it is probably defective solder connections near and around the vertical deflection circuitry and/or the flyback derived B+ supply to the vertical deflection... faulty solder joints are usually near and around the high heat producing parts.... chips, transistors, diodes, power resistors, etc. -- Best Regards, Daniel Sofie Electronics Supply & Repair --------------------- "DV" wrote in message news Thanks for the response. I appreciate what you are saying about the repairs. While I don't a lot of experience in consumer electronic repairs, TV's or otherwise, I do have expertise in electronics repair in general because of the work I've been doing for the past 20+ years. Having said that, I must say that I have a lot of respect for the persons in your profession who could quickly look at this set and diagnose it. I don't know what you consider a "cheap" repair, but I do know that I don't want to put $100 into. This particular repair shouldn't be that complex based on the symptoms and the responses I've received so far. Also, I'm interested in at least trying to repair it myself because I am in the field. That's why I'm on usenet looking for clues. Best regards, DV P.S. I don't have any schematics actually ordered yet and probably won't. "Sofie" wrote in message ... DV: Don't keep "nursing" this along. If you wait to have it fixed and continue operating the unit, the repair shop price will be much higher because of additional failed components. Right now, the problem (as john's / kip's) reply post suggested, is most likely caused by dry, cracked or otherwise faulty solder joints in the vertical deflection circuitry..... and if you take it to a repair shop right away it can probably be repaired fairly cheaply. Don't waste your money and time purchasing schematics, they will not include a step by step troubleshooting and repair procedure for this type of problem...... and if you feel you need a schematic to locate the faulty area of the circuitry then you probably should just take it to a repair shop for a proper and safe repair. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------- "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
#8
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RCA TV/VCR combo vertical problem
16 hours testing with no failure. I'm declaring it repaired until further
notice. Many thanks for the tips john and sofie........excellent group. DV "DV" wrote in message nk.net... Thanks Daniel, There was one area in the deflection circuitry where the board was discolored due to heat. I made sure to hit all of those points. Appreciate the tip about the B+. Unit currently OK after 6+ hours....we'll see. Best regards, DV "Sofie" wrote in message ... DV: If no defective parts are involved this straight-forward repair at many service shops could be about $50 or even less...... and it is probably unlikely that any of the caps are bad because the picture would not "usually" be instantly good, then bad, then good again.... as all of the replies have indicated, it is probably defective solder connections near and around the vertical deflection circuitry and/or the flyback derived B+ supply to the vertical deflection... faulty solder joints are usually near and around the high heat producing parts.... chips, transistors, diodes, power resistors, etc. -- Best Regards, Daniel Sofie Electronics Supply & Repair --------------------- "DV" wrote in message news Thanks for the response. I appreciate what you are saying about the repairs. While I don't a lot of experience in consumer electronic repairs, TV's or otherwise, I do have expertise in electronics repair in general because of the work I've been doing for the past 20+ years. Having said that, I must say that I have a lot of respect for the persons in your profession who could quickly look at this set and diagnose it. I don't know what you consider a "cheap" repair, but I do know that I don't want to put $100 into. This particular repair shouldn't be that complex based on the symptoms and the responses I've received so far. Also, I'm interested in at least trying to repair it myself because I am in the field. That's why I'm on usenet looking for clues. Best regards, DV P.S. I don't have any schematics actually ordered yet and probably won't. "Sofie" wrote in message ... DV: Don't keep "nursing" this along. If you wait to have it fixed and continue operating the unit, the repair shop price will be much higher because of additional failed components. Right now, the problem (as john's / kip's) reply post suggested, is most likely caused by dry, cracked or otherwise faulty solder joints in the vertical deflection circuitry..... and if you take it to a repair shop right away it can probably be repaired fairly cheaply. Don't waste your money and time purchasing schematics, they will not include a step by step troubleshooting and repair procedure for this type of problem...... and if you feel you need a schematic to locate the faulty area of the circuitry then you probably should just take it to a repair shop for a proper and safe repair. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------- "DV" wrote in message ink.net... RCA 27" Model T25001GY, chassis B4UY91RVT Intermittent vertical collapse to about 4". On/Off reset causes symptom to go away, not always. Anyone seen this problem with this set before? Have schematics on the way but would appreciate any info. Thanks, DV |
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