How to Fix a Panther 13.8V Regulated DC Power Supply. The Long Way! Learning Electronics on the Fly!
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- Опубліковано 1 лис 2023
- Another item saved from the ewaste bin! This job involved a quite lot more repair diagnostics than what was actually required - but we got there in the end!
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You have to be happy with that. I had a little laugh, when you said that the voltage went up to 11.
Thanks David - 11 just wasn't high enough! 🤣
You never cease to amaze me with what you have a crack at; & do so successfully. "Having a go" isn't it? Good job, Chris.
Many thanks mate - I do enjoy a challenge! 😃
Capacitors have impedance so can act as a component in a potential divider. True, moreso in ac…. I’m going to show my A level students this in the UK. Useful for them to know as we move onto the topic of potential dividers. Thanks as always.
Thanks Sarah! As long as your students are ok with an Aussie accent, then that's great! 🤣
Nice fix. Most of it was Greek to me but I really appreciate your problem solving and determination in getting the job done. I do know that the best lessons are learnt by doing.
Much of it was Greek to me too Dee! But I was happy to sort it out eventually 😊👍
Great save Chris, and excellent video.
Although the obvious solution was to replace the blown tantalum, think of the knowledge you have gained trying to figure this out. Learning is never wasted.
I think you were right about the dead short inside the tantalum too. It makes sense why the voltage dropped across the output.
Cheers NN
Thanks NN. Any nong can replace a blown part - I enjoyed my trip via Darwin! 🤪
A great learning curve on that one. Glad you got it fixed. 👍
Indeed there was! I think there were a lot of benefits in taking the long way around!
I watch a bunch of electronic repairs in the hopes of learning how circuits work.
I have picked up tidbits, but my brain completely shuts down when diagrams come out.
Its like a foreign language, i try to understand it but my brain just isn't ready for it.
Thanks for sharing.
Thanks Kayle! Maybe try drawing a simple one for a start - it just may wake up the ol' grey matter! 😊👍
Excellent. It's always the capacitors! You've thrown down the gauntlet. Maybe I will change out my capacitor job before year end. 😅😅
Let's not be rash Nas - the end of the year is pretty close! 🤣🤣
If you are considering cleaning the dial face, here's a quick suggestion. Most of the grime is oil from the fingers moving the dial hands. Basically, it is dirt. Here's the recommendation: First, ensure that the face is not paper or pliable material. Take a small cup of water 8oz. Drop a dental cleaning tablet in the water. let it dissolve. Take a clean, small brush. Stir up the mixture. brush the solution on the dial face. this will remove the oil and grime from the face. wipe clean with a soft cloth.
I take it you were watching a clock repair video for this comment Mert? That is an excellent suggestion - I will be trying that! 😊👍
I bet Ewaste Ben would have a spare tantrum capacitor or two, Chris. I don't know much about electronics, I would have just changed the part and then re-test it. Interesting you showing all the parts and testing them. Lol cheers Graham.
Thanks Graham. If I had of had a suitable tantalum cap here I would have just swapped it straight away! But I didn't - and I didn't want to just order one without making sure everything else in the circuit was ok.
I love your spirit in confronting these problems. And it is allways interesting to see how things look on the inside of appliences.
Thanks Sarit! Problems are just learning opportunities in disguise! 🤪
Really interesting fix! Kudos for digging in and drawing a schematic, a super-important step that I struggle to do 😆
My only tip would be to watch out for the distinction between uF (microfarad) and pF (picofarad) on capacitors. Hopefully you're right that it doesn't matter much here, but could cause trouble in other circuits.
I don't have a good answer for what the output cap was doing, but if there was a boost circuit it may have been part of that, I think they work with oscillations that get smoothed out. Hopefully someone who understands it can educate us!
Thanks Nebby! I actually enjoyed working out that schematic - more than I thought I would! Thanks for your comments! I welcome any electronics knowledge at all! 👍😊
Great to learn mate. Oh..3741.8 kms by the way. According to Google
Thanks Glen! Yeah, just a little further than the corner store.. 🤪
Absolutely mate. Got a mate. His Scottish relatives visited. He asked them what they wanted to do today. They said they’d like to go and see Ayer’s Rock! Definitely not a day trip from Leeton. Lol.
@@glenhehir3833 🤣