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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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What does RT mean on a pcb
hi i am a self taught repairer of basic electronic items and have been
doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks |
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#2
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What does RT mean on a pcb
rupert wrote:
hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Probably a MOV for surge protection. |
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#3
Posted to sci.electronics.repair
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What does RT mean on a pcb
rupert wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks It's a 'surgeguard' style NTC thermistor. Have you measured them ? They can run quite hot btw. Graham |
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#4
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What does RT mean on a pcb
James Sweet wrote: rupert wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Probably a MOV for surge protection. They look similar to NTCs too. The MOV will be 'across the line' where an NTC will be in series. Graham |
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#5
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What does RT mean on a pcb
On Mar 10, 12:16 pm, Eeyore
wrote: James Sweet wrote: rupert wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Probably a MOV for surge protection. They look similar to NTCs too. The MOV will be 'across the line' where an NTC will be in series. Graham- Hide quoted text - - Show quoted text - hi THANKS ALOT its an NTC then but how do i find the value of the one i need |
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#6
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What does RT mean on a pcb
On 10 Mar 2007 02:21:14 -0800, "rupert" wrote:
hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Highly likely that RT means Resistor - Temperature (dependant). It will be a NTC inrush current suppressor.. Since the unit is not likely to be using more than a couple of 10's of watts at most you could use one such as this http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf |
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#7
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What does RT mean on a pcb
rupert wrote: Eeyore wrote: James Sweet wrote: rupert wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Probably a MOV for surge protection. They look similar to NTCs too. The MOV will be 'across the line' where an NTC will be in series. hi THANKS ALOT its an NTC then but how do i find the value of the one i need Measure a good one ? They're specced by surge capability (related to size) and hot and cold resistance. You should be able to find a suitable replacement from that. Graham |
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#8
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What does RT mean on a pcb
On Mar 11, 6:39 am, Eeyore
wrote: rupert wrote: Eeyore wrote: James Sweet wrote: rupert wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Probably a MOV for surge protection. They look similar to NTCs too. The MOV will be 'across the line' where an NTC will be in series. hi THANKS ALOT its an NTC then but how do i find the value of the one i need Measure a good one ? They're specced by surge capability (related to size) and hot and cold resistance. You should be able to find a suitable replacement from that. Graham- Hide quoted text - - Show quoted text - THANKS FOR YOUR REPLIES I GET SOME ON ORDER!!! |
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#9
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What does RT mean on a pcb
On Sun, 11 Mar 2007 03:38:29 GMT, Ross Herbert
wrote: On 10 Mar 2007 02:21:14 -0800, "rupert" wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Highly likely that RT means Resistor - Temperature (dependant). It will be a NTC inrush current suppressor.. Since the unit is not likely to be using more than a couple of 10's of watts at most you could use one such as this http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf Could this device (or similar) be put in series with my halogen puck lights that keep blowing bulbs - and would it help? |
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#11
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What does RT mean on a pcb
On Sun, 11 Mar 2007 12:38:47 GMT, wrote:
On Sun, 11 Mar 2007 03:38:29 GMT, Ross Herbert wrote: On 10 Mar 2007 02:21:14 -0800, "rupert" wrote: hi i am a self taught repairer of basic electronic items and have been doing it for about 4 years, as i buy faulty items repair them then sell them on but i have a batch of about 25 PVRs i have repaired about 20 of them but there is one part on the last 4 that i need and cant identify It is on the power supply board it is labelled RT1 and looks alot like a small capacitor it has the marking 8S100L on it it is one of the early components on the board (next after the fuse- F1)) please help as i have repured the rest of the board but am sure that i need to replace this aswell as it is showing scorch marks Highly likely that RT means Resistor - Temperature (dependant). It will be a NTC inrush current suppressor.. Since the unit is not likely to be using more than a couple of 10's of watts at most you could use one such as this http://www.ametherm.com/Data%20Sheets/SL08%2010001.pdf Could this device (or similar) be put in series with my halogen puck lights that keep blowing bulbs - and would it help? Could you please explain what a "puck light" is? I am familiar with the standard halogen downlights operating from ac mains supply via a transformer but not knowing the specifics of your particular halogen I couldn't say whether the NTC would help. |
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#12
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What does RT mean on a pcb
it is labelled RT1 and looks alot like a small capacitor
Is it a microprocessor PCB? Does it say "RTS"? "Return to sender, address unknown". But that's just a guess... -- Al, the "king" |
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#13
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What does RT mean on a pcb
Could you please explain what a "puck light" is? I am familiar with the standard halogen downlights operating from ac mains supply via a transformer but not knowing the specifics of your particular halogen I couldn't say whether the NTC would help. I would guess he means the hockey puck shaped halogen fixtures meant for mounting under kitchen cabinets. |
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#14
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What does RT mean on a pcb
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