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Thread Tools | Display Modes |
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#1 |
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Senior Member
Join Date: Apr 2012
City & State: Smyrna GA
My Country: USA
Line Voltage: 120
I'm a: Hobbyist Tech
Posts: 160
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What is soldered to this power supply cap is it a resistor or a diode,fuse it's connect from power supply source to main board just curious. Monitor is a Va720
Thanks Last edited by 1supertech; 08-17-2012 at 11:48 AM.. |
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#2 |
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Badcaps Veteran
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 7,016
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It looks like a Diode, is the non-band side connected to the RED wire B+ input? It is used to protect the circuits incase some hooks it up with wrong polarity applied to the Red/black power cables.
__________________
Never stop learning or per Greek Pro "when you will update your ID from Knowledge Seeker to a Pro (in 10 years) , then I will take you more seriously, for now you are just a kid playing with it keyboard" Baisc 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=24809 |
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#3 |
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Slow Learner
Join Date: Dec 2010
City & State: Lancashire UK
Posts: 4,657
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I believe it is a 7A fusible resistor
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#4 |
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Senior Member
Join Date: Apr 2012
City & State: Smyrna GA
My Country: USA
Line Voltage: 120
I'm a: Hobbyist Tech
Posts: 160
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Thanks guy's
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#5 |
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Badcaps Veteran
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 7,016
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Put the meter in Diode mode and test it.
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#6 |
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Slow Learner
Join Date: Dec 2010
City & State: Lancashire UK
Posts: 4,657
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Here is a chinese?/Japanese?/Korean? badcaps site
http://bbs.pigoo.com/thread-25035-1-1.html It is regarding a VA720?? and mentions a fuse SG7A I wonder who they blame for the bad cap production? Perhaps a bit more plausible is this result of a search "SG7A Fuse" I have looked at NTE site but no mention. I guess obsolete - perhaps NTE over a co SG? singapore? First line: sg7a SG2A JET SG3A ME 4946 Jet 2A 250v fuse Worldwide supplier high quality electronic components other circuit protection devices Polymeric Resettable Fuses Filled Surge Arresters Integrated Circuit Protectors Thermal Cut-Offs Metal Oxide Varistors Overvoltage Transient Suppressors SIDACS Thermal C Abstract: .. 74−5 SG7A 7.0A F−02. 74−5 FG8A 8.0A F−02. 74−5FG1 0A 10A F−02. * Not UL Approved. 4 NTE Electronics, Inc. Vo ice 973 748−5 089 FA X 973 748−6 224 http://www.nteinc.com. 5 x 20mm Miniat ure Ceramic .. Tags: Jet 2A 250v fuse ME 4946 JET SG3A SG2A sg7a datasheet abstract.. Last edited by selldoor; 08-17-2012 at 02:42 PM.. |
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#7 |
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Badcaps Veteran
Join Date: Feb 2010
City & State: S.F. Bay area
My Country: USA
Line Voltage: 120V 60Hz
I'm a: Knowledge Seeker
Posts: 7,016
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If that is 7A fuse, that is a lot of Amps for 17" monitor.
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#8 |
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Badcaps Veteran
Join Date: Apr 2011
City & State: University of Leeds (MEng ElecEng undergrad)
My Country: UK
Line Voltage: 230Vac 50Hz
I'm a: Student Tech
Posts: 13,621
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7A may have been chosen to improve reliability; fuse could be carrying only about ~3.5A. Still a lot for a 17".
__________________
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#9 |
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Senior Member
Join Date: Apr 2012
City & State: Smyrna GA
My Country: USA
Line Voltage: 120
I'm a: Hobbyist Tech
Posts: 160
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Recapped Va720 works great for an old monitor.
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