Excellent, i'm chuffed you won :-D Some of those caps must be leaky at high voltages, the rest will be outside there spec. Electrolitics are very evil, they work for years then leak electrolite suddenly and eat tracks and other component legs. I have an old Realistic 2005 scanner, it always worked but it sat on a shelf for a long time. One day a frend was having problems with his old car unlock fob, i thought 400 ish mhz band and my scanner covers that band, so i can hear the burst. Nope! the scanner was dead :-(, some electrolitics just leaked and ate a group of tracks on the pcb (horrible mess). So i had to fix the scanner first lol. Ok back to the fob, no emmision.... a power track had broken going through a pcb hole. A bit if bare wire pushed through the pcb and soldered both sides stopped its fun lol.
Seriously, sometimes it feels like you've hit a wall with this stuff! I'm always amazed that the IC's are almost never the problem - or at least haven't been for me so far. Interesting to hear about your issues with the car fob. I've had problems with them before, never really considered looking much deeper. Good to know!
@@felix_da_katze Communication receivers can be handy for finding problems in i.f strips/oscillators/mixers in c.b radio or broardcast radios. Why probe a oscillator with a probe that could stop it, use the communication receiver antenna wire near the oscillator. Sniff sniff without upsetting the circuit :-D. People often have test gear they dont realise they have. Ill shut up now :)
@@felix_da_katze Sorry im a one hit wonder lol. It's just thinking about the propertys of things around you. When i wanted to trace a fault in a tape recorder audio playback stage, an old radio was used as an amplifier, screened wire tapped on to the volume control, Instant monitor. Yes i know its very basic silly tests. You have an oscilliscope, so you could use it for audio checking, but your ears are so much better at hearing distortion. I sound like an old git ha ha :-D
Excellent, i'm chuffed you won :-D
Some of those caps must be leaky at high voltages, the rest will be outside there spec.
Electrolitics are very evil, they work for years then leak electrolite suddenly and eat tracks and other component legs.
I have an old Realistic 2005 scanner, it always worked but it sat on a shelf for a long time.
One day a frend was having problems with his old car unlock fob, i thought 400 ish mhz band and my scanner covers that band, so i can hear the burst.
Nope! the scanner was dead :-(, some electrolitics just leaked and ate a group of tracks on the pcb (horrible mess).
So i had to fix the scanner first lol.
Ok back to the fob, no emmision.... a power track had broken going through a pcb hole.
A bit if bare wire pushed through the pcb and soldered both sides stopped its fun lol.
Seriously, sometimes it feels like you've hit a wall with this stuff! I'm always amazed that the IC's are almost never the problem - or at least haven't been for me so far.
Interesting to hear about your issues with the car fob. I've had problems with them before, never really considered looking much deeper. Good to know!
@@felix_da_katze Communication receivers can be handy for finding problems in i.f strips/oscillators/mixers in c.b radio or broardcast radios.
Why probe a oscillator with a probe that could stop it, use the communication receiver antenna wire near the oscillator.
Sniff sniff without upsetting the circuit :-D.
People often have test gear they dont realise they have.
Ill shut up now :)
I hadn't thought along those lines. Sounds like it could be useful. Got any more info?
@@felix_da_katze Sorry im a one hit wonder lol.
It's just thinking about the propertys of things around you.
When i wanted to trace a fault in a tape recorder audio playback stage, an old radio was used as an amplifier, screened wire tapped on to the volume control, Instant monitor.
Yes i know its very basic silly tests.
You have an oscilliscope, so you could use it for audio checking, but your ears are so much better at hearing distortion.
I sound like an old git ha ha :-D