My Step machine just broke down, is it garbage now or might it work if I replace the two big caps on the powersupply?
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Re: Technogym Step 600 XT Pro
Welcome, geeklund!
All of the electrolytic capacitors look like top-quality Japanese units.
Sometimes snap-in electrolytic capacitors appear to be bulging, but it is often the plastic cap covering the vent becoming warped - if you carefully remove it, you can see if the vent on the snap-in capacitors are bulging.My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics. -
Re: Technogym Step 600 XT Pro
Is the little C13 capacitor bulging (or is only the photo)? If the unit is completely dead, I would have checked the fuse (250V T3,15Ah) first.------------
Be a menschComment
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Fixed a 10yo HP inkjet with a bulging cap on the digital computer power rails (1 to 5V). Unstable voltages causing these inkjets to not boot properly or crash quickly. Seems like more and more of these are showing up nearing the 10 year mark. Board design seem to look similar for many of these printers.
https://h30434.www3.hp.com/t5/Printi...t/true#M99792202-03-2025, 09:50 PM -
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
Hello guys,
I have a Philips 240B7QPJEB. The monitor seems completely dead.
I opened it and measured the voltages of the powersupply. I found that a mosfet was dead and replaced it.
On the connector, that goes to the TCON board, all voltages 15-19V and 5V are present.
The small connector on the left of the PSU has two cables with 18V and all the other have 0.2V. It connects on this small connector on the left ontop of the panel. I guess the backlight? Seens fine I guess.
The weird thing is, that the Power LED is powered over the TCON board.
On The TCON...12-28-2024, 02:12 PM -
Just typical LED bar failure repair but discovered a couple of things worthy of posting
PSU had a bulging cap (470uF 25V). Likely AC/DC bridge rectifier filter. Have seen a ton of 470uF bridge rectifier filter failures on a bunch of difference devices (not just TVs) Stock up on 470uF 25v 35v
2nd thing worth of note is after all the work to replace edge lit LEDs. Discovered 2 LEDs with phosphor coating differnce produing slightly differnet color temp. Result on edge lit TV = dark veritical band
Can't detect when testing the LED bar along...
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Hey guys! i build a 30V 3A powersupply. My friend blown it... He connected cables to the wrong connectors. I changed the op amps, shorted zener diode and a 9014. Now the powersupply works again but only to 6V. When i measured the caps they looked in spec. But after i connected 2200uF cap on the main power rail parallel to the C1 - 3300uf one - output voltage is now regulatable to 8v. Any idea where to look ? or what to do ? R1 and R2 are getting hot. The input of the transformer is 40V after rectifiers. Its a 24V transformer on 230V mains voltage....
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