bwack retweeted
Got the robo eyes working on the vPlayer! tindie.com/products/36793/
Doing a recap of an old Motherboard for a friend. Grouping all caps into a table. Taking notes on an image.
bwack retweeted
Why wasn't this taught in school⁉️🧐
Yet another glimpse at the cage we (were) all in...🥹
-NewsWithoutLies-
While measuring, it kept coming back to life. Sure enough, cracked solderjoints seen in this area. Also tarnished resistors.
My colleagues laptop bios password reset. Another laptop from 2016 is not going to waste. The sane can't be said for newer laptops with bios locked and lost passwords?
I'm reaching out for repair help on YT youtu.be/ng8aARIZnwE?si=w7H5…
Denon pma repair. Class AB amp. Scope shows positive and negative DC levels before push pull transistors. Good. Left channel, ok. Right channel dead. No dc levels, no signal. Seems to change when warming up.
The fault is in the power amp section. I will double check the measurements, but it does look like something is turning off two transistors. From memory I think all transistors working in the linear region have to be on all the time?
I can see the input signal all the way into the power amplifier board of my Denon amplifier. The tone and volume boards seem ok.
Finally got to this repair project. Measuring voltages, without shorting out all the loose boards flopping around. Denon PMA 1500 R2
