Somewhere... I don't remember where, but I have a piece of equipment laying around that has SMT caps (not chip type) sitting where a through-hole was meant to be. I guess as long as the solder touches it's okay, right? Is this hard to do or could I mimmick this on pretty much anything?
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Presonus Audiobox USB, Schiit Magni 3, Sony MDR-V700 -
Re: SMT where through-hole should be?
Sure you can. It's a bit impractical though due to different spacings... i usually scratch copper traces free and use them as pads.
Be sure you don't mix up polarization when using the underside."Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin slitting throats." - H.L. Mencken
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hi there,
I am trying to fix my generic magsafe charger so that my old macbook does not get 'ghost touches'. When I ground the case with my hand touchscreen works fine, but without it I am getting erratic movements. The charger is class II - no earthing, floating ground.
What I tried so far
- add more capacitors to the output (from nF to 2200uF)
- add RC filter to the output (different coils and capacitors)
- change the Y cap from default 2.2nF to 1nF, 33nF and remove
- bridge secondary and primary winding circuit with 4x10M resistors
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Hello everyone! I picked up this 65" ST50 plasma TV for $80 on Facebook marketplace two weeks ago. I have the basic electronic knowledge of a teenage computer geek, having assembled laptops and PCs and messed with soldering and software.
This afternoon I decided to disassemble it to mitigate a buzzing noise. This is a well known issue for this TV ever since they were new. The popular solution is to replace the loose internal screws for ones with lock washers, preventing any future buzzing. I figured that I could just fully loosen and tighten all of the screws securing the... -
⚠️ Not a Rescue BIOS. Flash at Your Own Risk. ⚠️
This is not A17.
This is not listed on Dell's support site.
This is an unreleased internal firmware revision recovered from a university loaner Latitude E6530... and it possibly bricked the system it came from.
It is from the 8 MB Winbond W25Q64 chip. Could be nothing burger but given the anomalies this is a very interesting firmware dump.
Firmware collectors and reverse engineers might find this useful, It contains certs, modules, and DXE drivers not present in A17. This is likely... -
Hello. Sorry for the long post, but I am trying to decide if this is a simple battery replacement, or potentially something more complicated.
I bought an open box MacBook Air M1 2020 A2337. Seller claimed it was never used. Visually, it appears pristine.
On arrival, the battery was completely flat. Computer powers up and boots fine. Battery status showing 1% and charging, 1 cycle. coconutBattery showing 0 mAh and ~6 watts.
After some hours, the battery status did not improve. Restore via DFU did not help.
I connected the power adapter to a Kill-a-Watt... -
Dear friends, I want to share my experience repairing an ASUS TUF FX506L gaming laptop motherboard: DABKXDMB8E0_F_BKXD. Boardview and schematic are available, as well as the BIOS and ITE ROM.
When the customer brought in this laptop, it was initially dead; it showed no signs of booting for any reason. After hours of measurements, checking each stage, MOSFET, and seeing if there was a short circuit in any capacitor, I discovered a strange 0.7V leakage voltage on the 3V_S5 rail, particularly on the PL9 coil, with the board not powered on. There were 3V_LDO and 5V_LDO voltages, which...
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