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04-04-2014, 02:28 PM
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#1 |
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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: 39,206
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FLUKE 43B PM8907 power supply repair
Have two dead out of four power supply for (4) FLUKE 43B.
The resistance reading on the two power prongs shows open circuit. Open up the module, you will need security bit, and found hair line crack on the circuit board. Too bad that FLUKE did not spec in fiberglass PCB to build this power supply. Fixed the broken traces and added epoxy to the PCB to help supporting the board.
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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=24809 |
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04-04-2014, 03:14 PM
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#2 |
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Badcaps Veteran
Join Date: Oct 2013
City & State: Windsor ON
My Country: Canada
I'm a: Knowledge Seeker
Posts: 3,053
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Re: FLUKE 43B PM8907 power supply repair
Good eye, bud.
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04-04-2014, 03:54 PM
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#3 |
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Badcaps Veteran
Join Date: Dec 2008
Posts: 5,391
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Re: FLUKE 43B PM8907 power supply repair
Hope you swapped out that "Stone" brand cap. They have all the longevity of a croissant at a feminist buffet.
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"We have offered them (the Arabs) a sensible way for so many years. But no, they wanted to fight. Fine! We gave them technology, the latest, the kind even Vietnam didn't have. They had double superiority in tanks and aircraft, triple in artillery, and in air defense and anti-tank weapons they had absolute supremacy. And what? Once again they were beaten. Once again they scrammed [sic]. Once again they screamed for us to come save them. Sadat woke me up in the middle of the night twice over the phone, 'Save me!' He demanded to send Soviet troops, and immediately! No! We are not going to fight for them." -Leonid Brezhnev (On the Yom Kippur War) |
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04-04-2014, 04:17 PM
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#4 |
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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: 39,206
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Re: FLUKE 43B PM8907 power supply repair
Power supply is made in Germany with lousy cap. The replacement power supply is around $100.
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04-04-2014, 04:41 PM
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#5 |
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EVs Rule
Join Date: Apr 2011
City & State: Leeds
My Country: UK
Line Voltage: 230Vac 50Hz
I'm a: Professional Tech
Posts: 32,373
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Re: FLUKE 43B PM8907 power supply repair
Very disappointing for Fluke. Then again, after seeing CapXon in a Tektronix signal generator, I'm not too surprised.
My Rigol scope uses Epcos caps, even though it is made and designed in China, they are OK caps. Not the best, but far from the worst...
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead! Free service manuals: http://www.toms-service-manuals.com/ -- 72 LED/LCD TVs, 5 monitors, 28 plasma TVs, and 2 AVR 6.1 amplifiers fixed! -- I repair Pioneer 9G Plasma Main Boards & KRP-M01 Media Receivers (PM me for info) 2 Pioneer KURO 9G, 12 Panasonic LCD/Plasma, 1 Sony LCD, 1 NEC Plasma, 2 Yamaha HTS, 5 Sharp LCDs, 5 Toshiba LCDs, 7 Philips Plasma/LCD, 1 Hitachi Plasma, 11 LG LCD/Plasma, 18 Samsung LED/LCD/Plasma, 1 Thomson Plasma, 1 Atec LCD, 1 Hanspree LCD, 1 Xerox LCD, 1 Harwa LCD, 2 Proview LCD, 2 Hyundai LCD, 1 "Onn" LCD, 1 Grundig LCD, 1 Dell LCD, 1 iiyama LCD, 1 Acer LED, 1 Logik LCD, 1 Baird (China) LCD, 6 Bush LCDs, 22 Vestel LCDs (Best->Worst) |
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04-04-2014, 04:55 PM
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#6 |
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Badcaps Veteran
Join Date: Dec 2008
Posts: 5,391
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Re: FLUKE 43B PM8907 power supply repair
Epcos is not a reliable brand. I've seen Dave Jones claim they are, but he's wrong.
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04-04-2014, 05:02 PM
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#7 | |
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EVs Rule
Join Date: Apr 2011
City & State: Leeds
My Country: UK
Line Voltage: 230Vac 50Hz
I'm a: Professional Tech
Posts: 32,373
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Re: FLUKE 43B PM8907 power supply repair
Quote:
I have reasonable confidence in them. I doubt they're as good as a Rubycon or Panasonic, but I wouldn't call them unreliable. I've never seen one go bad. |
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04-05-2014, 07:09 AM
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#8 | |
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Capaholic
Join Date: Jan 2011
City & State: Trenton, NJ
My Country: USA
Line Voltage: 240/120V 60Hz
I'm a: Hardcore Geek
Posts: 3,989
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Re: FLUKE 43B PM8907 power supply repair
Quote:
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Muh-soggy-knee |
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04-06-2014, 12:49 AM
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#9 |
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Badcaps Veteran
Join Date: Apr 2010
City & State: Canada
Posts: 9,200
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Re: FLUKE 43B PM8907 power supply repair
Thanks for sharing. I'm surprised they are made in Germany and not China.
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