Can resistor used as a soldering iron? Basically, they are same structure?
PS: Isn't Melania Trump looking like Jackie Kennedy?
PS: Isn't Melania Trump looking like Jackie Kennedy?
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Last edited by capwizard; 01-19-2017, 12:16 PM. -
Re: Can resistor used as a soldering iron?
The heated resistors are caused by shorted one buffer board driver IC 3407F.
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https://www.thesun.co.uk/news/266987...gs-for-uk-too/Attached FilesLast edited by capwizard; 01-21-2017, 10:07 AM. -
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Re: Can resistor used as a soldering iron?
I am A slappy guy but not for this one.
pic: It works with my homemade FLUX, homemade ComPaq hot air rework station.
Homemade soldering paste, flux & Chip Quik
https://www.badcaps.net/forum/showthread.php?t=58792Attached FilesLast edited by capwizard; 01-21-2017, 12:29 PM.Comment
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Re: Can resistor used as a soldering iron?
Wirewound resistors, R5600 and R5610 are 10 ohm resistors, paralleled together became a 5 ohm resistor which has 13.8A current (952w) passes through about 20 seconds (19k Joules) becomes red hot.Attached FilesLast edited by capwizard; 01-23-2017, 10:37 AM.Comment
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Re: Can resistor used as a soldering iron?
That circuit section can supply 70V at 13.8A for that long without blowing the fuse? That is more power than the whole TV consumes.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
That's a very good question! TV came with no Fuses blown out, with shorted buffer ICs and red hot resistors, Unknowing customer maybe let the TV on for hours?Last edited by capwizard; 01-23-2017, 10:46 AM.Comment
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Re: Can resistor used as a soldering iron?
An you are able to read 70V across the resistors? Some thing is not logical. 13.8A through small traces would have cause lots more damage than that.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
Tv has been fixed, I measure from ground to not red hot-working resistors voltage readout is 69v DC?Comment
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Re: Can resistor used as a soldering iron?
That is why it did not make sense because you are not measuring the actual Vrops on the resistor. When numbers do not added up then you know it is an error in measurement, especial when you see 13.8A.
Details and common sense and math come into play.Last edited by budm; 01-23-2017, 11:38 AM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
I did remember when I measured voltage across with red hot resistors is 0.2 V, almost no voltage there? I probably need to measure with current?Last edited by capwizard; 01-23-2017, 11:55 AM.Comment
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
0.04A 0.008w.....? I Need to put back original Y-sustain board and measure again.....
PS: For working TV voltage across resistors it is 0.2 V. voltage from resistors to GND is -68.1v.Attached FilesLast edited by capwizard; 01-23-2017, 12:24 PM.Comment
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Re: Can resistor used as a soldering iron?
Yep, when something does not make sense, measurement must be made again.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
Sorry, I can't re-established the crime scene, anymore! I try to shorted the pin as the original buffer board did (this is other junk buffer board), the red hot resistors no more worked .....And this is the customer's TV, I need to stop some where .........see you guy next time, I will measure the Vrops on the red-hot resistors first.......
Attached FilesLast edited by capwizard; 01-23-2017, 01:28 PM.Comment
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Re: Can resistor used as a soldering iron?
You know, I gonna have an insomnia. So I double checked, I found power cable to Y sustain board is unplugged...................Thanks budm again..........
pic5: the resistors light up.Attached FilesLast edited by capwizard; 01-23-2017, 02:16 PM.Comment
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Re: Can resistor used as a soldering iron?
Since they are two 10 Ohms resistors connected in parallel, so each one dissipates about 7.5W.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
The 10 ohm resistor is 2w rating for 7.5w ! What's why!Comment
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Re: Can resistor used as a soldering iron?
They should have use FUSIBLE resistor instead or better circuit protection design to stop too much current flow when fault occur. But at least they use Fame proof resistors.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Can resistor used as a soldering iron?
Can we re-use those have been red hot resistors again?Comment
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Re: Can resistor used as a soldering iron?
For Dear Capwizard: "Can we re-use those have been red hot resistors again?"
I put it back and gave TV to customer, He gonna test for us. .......If I do not update in one year, It means TV works ....
Last edited by capwizard; 01-26-2017, 04:48 PM.Comment
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I have a Hoover FM216LI cordless vacuum which isn't charging its internal battery.
I opened up the unit, and it has 6x Samsung ICR18650-22P cells connected in series.
5 cells were at about 3.3-3.1V. one was at 2.4V, so I assumed this cell was bad that's why the vacuum wasn't charging so I replaced it with another 18650, but after that the problem still persists, the vacuum turns on a bit and then cuts out since the batteries are empty.
So I think the over discharged battery wasn't the culprit, it was a symptom of the unit not being able to charge its batteries.... -
Hi
I have an Ersa rds 80 soldering station which has developed a fault and just showing err on display
I have found a burnt resistor on pcb can anyone help me identify this resistor if you have a circuit diagram or similar unit
The printed circuit board markings are rd80 ver 2.0 and the resistor in question is R6
Many thanks... -
Hello everyone, next I have the following problem with the Sumsour 8586D 110v dual station I bought it a year ago and it worked wonderfully, now it presents the H-E error on the soldering iron side, the hot air side works correctly..... I disassembled the soldering iron head because the manual tells me that this error is due to ceramic resistance problems, in effect, I measured it and it is open, I bought a new one that is working verified in a soldering iron and nothing.... The same error continues, I proceeded to open the station and check visually, I found a totally damaged 1R00 surface mount... -
Has anybody tested this product? Posting this question on a Facebook tech group I'm in got a few responses like "that kind of thing corrodes the tips" and "just using normal solder paste is much better" so I'm not looking for generic responses like that, but rather, does anybody know for certain whether this exact product is good or bad for soldering iron tips?
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Hi
I am trying to repair an ancient Dell 2209WA Monitor which suddenly shut off with a pop sound. On investigation found that one of the fusible resistors had blown. Further investigation identified multiple components as faulty because of which the fusible resistor blew. Please refer the attached circuit diagram showing the components that were found to be damaged.
1. FR950 - blown fusible resistor - 0.2 Ohm 1W
2. Q950 - shorted Q950 MOSFET - 650V 10A N Channel Mosfet
3. R835 - Blown Resistor - 20KOhm SMD resistor
4. D930 - Shorted Schottkey Diode...
Comment