good advice from everyone else. keep at it is my advice. when i first made my gainclone, i tried being to smart and changing the circuit, and surpise surpise, it didnt work 🙂 but i followed the circuit diagram (peter daniel) and it worked first time.
elizard said:
Put an ohm meter on them (+ to + and - to - of course) and watch the meter. As the cap charges, the resistance should climb- quick at first, and then slow down and almost settle. If you get constant high ohms, or really low ohms, it is probably dead. Unless they are BG or something, I would go ahead and replace them if for nothing more than the peace of mind. Hang in there. You'll get it!
Steve
do i need any sort of a load?
or can i just hook them up to the outputs of the bridges w/o anything on the end?
or can i just hook them up to the outputs of the bridges w/o anything on the end?
you need to unhook one of the bridge leads, or you will be measuring through two diode junctions. You don't want a load connected when you do this. Make sure it is powered down!
Steve
Steve
Gerontius said:
That is EXACTLY the reason we have standard connectors so things like this never happen! Plz be careful - it will kill - or at least give you a bad hair day!
Rarkov said:
This idea was crystalized in my mind in that moment I plugged it in. I realized the guy that invented the concept of uniquely shaped connectors was a genius. I'd of invented them at that moment if they weren't already.
😱
i don't know if it's just me, but a Gain Clone seems like a tough
first project. Point to point wiring in small places... it sounds like
(smells like?) he probably had a short somewhere, polarity
reversed, etc... easy to do in in such cramped quarters.
my first DIY attempt was so laughable i won't even mention it
here! You're in good company elizard!!
good luck elizard, keep at it.
first project. Point to point wiring in small places... it sounds like
(smells like?) he probably had a short somewhere, polarity
reversed, etc... easy to do in in such cramped quarters.
my first DIY attempt was so laughable i won't even mention it
here! You're in good company elizard!!
good luck elizard, keep at it.
I disagree. If you have ever tried to troubleshoot a fault on a discrete amp, you'll know that the GC is comparatively easy! With so few parts, you could substitute all of them (if necessary) in an hour or two at the most.
I think it is because the Gainclone looks so easy, that some people 'throw' it together and then get problems. I do agree that point-to-point wiring in such a confined space does require extra skill. Maybe first-time builders would do better to start with a purchased PCB (the GC equivalent of buying a kit amp).
Also, because the GC looks so easy and attracts many newbies to the DIY hi-fi club, perhaps those of us with more experience should try and anticipate some of the problems/mistakes they may encounter. When I have time, I will try and include a few more of the 'basics' on my Gainclone page.
Blowing stuff up is a good kind of fault to troubleshoot- just follow
your nose.
I built a preamp early on and the two channels didn't sound the same
it's still sitting on the shelf 25yrs later....
your nose.
I built a preamp early on and the two channels didn't sound the same
it's still sitting on the shelf 25yrs later....
more advice !!!
I hope your not getting too fed up with advice, I just thought of something else that I always try and do even with the seemingly easiest of cct's and that is to draw a diagram.
Then when I have sorted that out I draw a picture of the layout, so when it comes to the actual action making the thing it is much more straight forward because most of the thinking & planning is already done.
good luck
mike
I hope your not getting too fed up with advice, I just thought of something else that I always try and do even with the seemingly easiest of cct's and that is to draw a diagram.
Then when I have sorted that out I draw a picture of the layout, so when it comes to the actual action making the thing it is much more straight forward because most of the thinking & planning is already done.
good luck
mike
no, keep the advice coming 🙂
i've desoldered everything
next up, i'm gonna take apart the PS and re-do it ..
then after that, i'll wait for the lm3875's, and re-do the GC's, color code everything, and double check it
then wait till the next day to check again and power up 🙂
i've desoldered everything
next up, i'm gonna take apart the PS and re-do it ..
then after that, i'll wait for the lm3875's, and re-do the GC's, color code everything, and double check it
then wait till the next day to check again and power up 🙂
Good man elizard - may the force be with you.
You will be glad to know that you have inspired a new section for beginners on my Gainclone page
You will be glad to know that you have inspired a new section for beginners on my Gainclone page
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