Hi, i came across an olevia 242-s11 that had previous caps replaced in the power supply. Then after a while the same problems started to occur. When you first turn on the tv. I flashes and has horizontal and vertical lines. When nothing is plugged in to the inputs i get a regular blue screen that say no signal and all seems to be normal. Once it stays on for half our or so it is fine. When i took it apart it had four blown caps. Two on each inverter board. Once all soldered with new ones it did not fix the tv. Should i replace all the other caps even though they are not blown. Thank you.
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Hi folks,
I'm new to this forum. So my trusty 17-year-old LG 47" LCD recently died. As I was booting it up, I heard a hum followed by a loud bang, sounds of pieces flying around, and loss of power to the unit. Inspecting the PSU, I saw two obvious problems: a blown thermistor (bang + flung pieces) and a visibly bulging main cap. Inspecting as many components as I could with my Fluke MM, I diagnosed that the following components on the "hot side" of the board were also bad: one of the 2 main MOSFETs, main 8A fuse, small cap (25V 47uF) connected to main caps, and a blown... -
HP Modelnumber: 14-dh0061nb
This laptop had a shorted cap on a Vcore section. After replacement is works again. But there is still a battery issue.
The battery is HT03XL and with the built-in component test from HP, in the Power section, I get an error: Logic State: Calibration required (20), Charge state: Blown Fuse (42)
I have another same battery, also with error: Logic State: Very Weak (70), Charge state: Blown Fuse (42)
And a third battery TF03XL (looks identical) with error: Logic State: OK (0), Charge state: Blown Fuse (42)
All these 3 batteries are charging... -
I have blown a component on HP Envy x360 with motherboard G1 13 AMD X360 18740-1 448.0GA03.0011.
Unfortunately there are no schematics available and the component was so blown the marking weren't readable.
I have marked it with a red circle in the attached photos - sorry for the mediocre quality I was too much in a rush.
Hope someone will be able to identify the component.
Many thanks for your help!
Edit: High-res picture added on a normal board (not mine)... -
Hey everyone,
I'm a novice trying to repair my laptop. The LCD screen has an image, but no LED backlight for the image. It also produces an image when connected to an external monitor.
I have found what I believe to be a blown inductor labeled "L4502" and "120 Ohm" in the schematics (zoomed in image, blue arrow to blown component). I have included an image of the general area of the mobo and an excerpt from the schematics as well.
I am having trouble selecting a replacement component, which I believe to be a 120 Ohm ferrite bead, from the components... -
I'm looking at a vented C513 in a Marantz SR5400 (photo included), in the FR section on page 24 in the service manual (https://audiocircuit.dk/downloads/ma...400-avr-sm.pdf).
R533 right below it in the photo is charred, but measures the correct value.
1. I'm not familiar with amplifier circuits (at all — don't know the difference between classes, etc.) so I was wondering what problems would manifest from a supposedly non-operational C513? I didn't hear anything odd when testing the output channel with a speaker. Is there a simple test that can be done...10-21-2025, 09:02 AM
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