Eh, what's a couple of cheap parts in exchange for learning something? Cheap tuition. What was the project and what happened?
I plugged it in to the power supply and flipped the switch, and that's when it got interesting. I don't wish to take my curiosity for diy amps any further.
so ... how is this bad? looks like fun to me. we have an annual event here in california called "burning amp".
something was definitely not right. this is one place where you might get help.
something was definitely not right. this is one place where you might get help.
You owe it to yourself,don,t give up.Everybody blows something up at one time or another, Don,t blame yourself and try to find out what went wrong.
Hang in there, Evette
Hang in there, Evette
OK, so long.
So long indeed. So long since I first walked. And then I fell. So when I first fell, should I have given up walking?
That's quite impressive!
Looks like you let ALL the smoke out the 180 ohm resistor.
I'd guess the Vbe multiplier was wired up wrong. If it's just adjusted badly, you "only" blow up the output transistors.
Now clean it up and start over.🙂
Looks like you let ALL the smoke out the 180 ohm resistor.
I'd guess the Vbe multiplier was wired up wrong. If it's just adjusted badly, you "only" blow up the output transistors.
Now clean it up and start over.🙂
hey, I set fire to a 5 watt resistor in somebody's $4000 vintage luxman amp once...with the owner standing behind me...THAT was fun 🙂 but I just killed the power, blew out the flames, and tried again, it worked in the end 🙂
My brother-in-law is scared to do anything because he does not like to fail. I have made a lot of mistakes in life and even toasted a resistor or two.
He is amazed at times that I can pretty much pull a rabbit out of a hat. I just assume I probably not get something on the first try but I always can go back for seconds.
Well at least that works for most things but generally not women.
He is amazed at times that I can pretty much pull a rabbit out of a hat. I just assume I probably not get something on the first try but I always can go back for seconds.
Well at least that works for most things but generally not women.
Bryantramos79...look at it this way:
Do you know what is inside all these nice components and what really makes them work?
The answer is smoke! It's quite logical, because once you let the smoke out, the component doesn't work anymore.
So just replace the components that are burned, share the schematic for us, and let us help you keep the smoke inside the components.
Do you know what is inside all these nice components and what really makes them work?
The answer is smoke! It's quite logical, because once you let the smoke out, the component doesn't work anymore.
So just replace the components that are burned, share the schematic for us, and let us help you keep the smoke inside the components.
I know sod all about electronics, doesn't stop me though. Wait till you get hit by lumps of exploding power transistor😱
Hee Hee, it actually does look really cool, but I think I could identify with the frustration if it happened to me. I sweat over every joint, gotta be mirror perfect, I study for hours about what type of cap to use etc.
My guess is, you spent a lot of time on this project, and you used good parts to boot (not cheap), then.... poof. Wow. I would be emotionally drained and devastated.
But - if you care to learn, and if you take the time, you might A) find out what went wrong, there are people here who can help, guaranteed, or B) take a break and start over with this, or a new project all together.
It took me a looong time to start my first project. I came here as a headstrong, newbie, Hafler modder. I learned a lot by making my Hafler sound worse! After reading a ton, I feel totally confident in my first build: the F5.
I bet 10 bucks I don't let the smoke out when I fire her up!
Good luck 🙂
P.S. I once rebuilt a flimsy 14" by 8" PCB on a '93 Mitsubishi TV, over 100 desoldered/resoldered joints (tiny ones, lots of leaky caps) - and no smoke, it still works to this day. You just have to pay attention.... Very, very close attention 😉
My guess is, you spent a lot of time on this project, and you used good parts to boot (not cheap), then.... poof. Wow. I would be emotionally drained and devastated.
But - if you care to learn, and if you take the time, you might A) find out what went wrong, there are people here who can help, guaranteed, or B) take a break and start over with this, or a new project all together.
It took me a looong time to start my first project. I came here as a headstrong, newbie, Hafler modder. I learned a lot by making my Hafler sound worse! After reading a ton, I feel totally confident in my first build: the F5.
I bet 10 bucks I don't let the smoke out when I fire her up!
Good luck 🙂
P.S. I once rebuilt a flimsy 14" by 8" PCB on a '93 Mitsubishi TV, over 100 desoldered/resoldered joints (tiny ones, lots of leaky caps) - and no smoke, it still works to this day. You just have to pay attention.... Very, very close attention 😉
I was just imagining where we'd be if everyone gave up. Not pretty.
Anyway, here's something to do: put a fuse holder in where is says Fuse. I can only see a piece of wire. Not a good fuse.
Chris
Anyway, here's something to do: put a fuse holder in where is says Fuse. I can only see a piece of wire. Not a good fuse.
Chris
So much good advice has been given by the previous posters, everybody makes mistakes, don't give up!
Try and figure where you went wrong, ask for help, there are so many knowledgable people at diyAudio, someone will come up with a solution for you.
I tell you, it feels so good when you get your project , whatever it is, working for the first time 🙂
Good luck bryantramos79
Try and figure where you went wrong, ask for help, there are so many knowledgable people at diyAudio, someone will come up with a solution for you.
I tell you, it feels so good when you get your project , whatever it is, working for the first time 🙂
Good luck bryantramos79
Hi bryantramos79,
If you want to send me the blown channel I will do my best to get it going for you. You can then do the other channel yourself.
It will be interesting to see if they copied the PCB incorrectly or given you wrong components or instructions.
regards
These things are sent to test our resolve. Best approach - get sneaky and creep up on it with a variac. That way you can find cockups before they become fires. Dont give up.
I remember feeling similarly discouraged when I built a simple "bench" PSU based on an LM317. At the time I had never seen a centre-tapped transformer and stupidly connected both "red" wires together as the diagram i'd been given showed a single secondary. The power supply worked, but of course the transformer quickly overheated due to a short every half cycle, and eventually went off with a loud BANG.
I understand it's very disheartening but there are lessons to be learnt here. Never power up any newly made circuit directly - in this case, a couple of 22 ohm 5 W power resistors in place of the fuses would have saved the amp and given you a sign of a problem. Similarly, an incandescent bulb wired in series with the live/hot wire would have saved the amp and given you an immediate warning of a fault.
As a plumber, I'm sure you had to learn to bend and solder pipes, it must've been just as disheartening when your first joints leaked all over the place and your first go with a pipe bender ended with a nasty kink 🙂 The important thing is to learn from the mistakes.
(I'm still no good with a pipe bender!)
I understand it's very disheartening but there are lessons to be learnt here. Never power up any newly made circuit directly - in this case, a couple of 22 ohm 5 W power resistors in place of the fuses would have saved the amp and given you a sign of a problem. Similarly, an incandescent bulb wired in series with the live/hot wire would have saved the amp and given you an immediate warning of a fault.
As a plumber, I'm sure you had to learn to bend and solder pipes, it must've been just as disheartening when your first joints leaked all over the place and your first go with a pipe bender ended with a nasty kink 🙂 The important thing is to learn from the mistakes.
(I'm still no good with a pipe bender!)
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