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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 -
Re: LED bulbs can bring heat
Then there also needs to be a heat profile of a CFL bulb, though it depends on the bulb manufacturer. I've seen some CFL bulbs with thicker tubes, and these, due to surface area, do not get as hot as the ones with thinner tubes where the tubes themselves get quite hot.
The plastic base tends to stay cool but trying to remove a hot CFL holding just the base tends to be futile in most cases... better to just let it cool off.
I do wonder about them stopping making the fluted heatsinks for LEDs, probably completely economic as well as reducing the amount of surface that doesn't produce light, but I can't see how the "new" design dissipates as much heat...perhaps the electronics were made to tolerate higher heat or the bulbs are more efficient overall than older LED models.
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Mounting and Handling Guidelines for TO220 TO220F TO247 Cases / Packages
The TO220, TO220F and TO247 are the popular packages for power devices because of their versatility and ability to dissipate moderate amounts of heat. This application note describes the basic guidelines for handling power MOSFETs in TO220, TO220 and TO247 packages shown in Figure 1. Please note that only mechanical and soldering guidelines are covered here. Additional precautions are required for isolating high voltage rated devices to meet safety regulations.
Securing a good thermal interface between...10-07-2024, 04:35 AM -
detecting heat with IR LED receiver
I have some dark IR led, and want to know if it is be situable to detect pure heat (not visable glow ir radiation) in well lighted desk?
So, if I put hand over it in near distance like few centimeters, that detect rising heat, not covering it from light.
Something like termal camera, but in one spot, any simple circuit?... -
Hello everyone,
i was reballing the power manger of a moto g84, after applying heat i tried to power on and it wouldn’t.
i injected 1.5v to some capacitor that seem in short because both side beep if tested.
when i inject i feel the cpu burning;
since the cpu is exactly on the other side of the board, is that possible that the heat from the reballing damaged the cpu? do you know where i can find schematics or what can i do?
i know this is not enough to explain the situation so if you need any other info ask me please!
Thank you very much in advance11-08-2024, 02:13 PM -
Hi,
solder joints on heat sinks - how much do they matter? Could poor joints on heat sink cause issues if they are not properly joining to hot ground?
I'm looking at power source module of Panasonic plasma TV and I see many of these having visually poor quality, but could they matter? In general I would guess no, but I saw a video where someone was stressing out the importance of tightening the screws when fastening the power source board specifically for the ground to be connected properly.
Thanks -
So, lately i found that for smaller chips like pch it is very difficult to reball with nondirect heat stencil. So i decided to try direct heat stencils...and while i am waithing some stencils to arrive i have a few questions:
1. From who do you buy a quality direct heat stencils? i am reading that they can vary in quality and make a big difference...Any trusted sellers?
2. I am reading also the problem of warping (curving) direct heat stencils...Is it because of quality of the stencils? or/and because some preheating is also required? and help and advice here?01-17-2022, 05:06 AM
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