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Old 8th May 2010, 06:30 PM   #31
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Quote:
Originally Posted by Aucosticraft View Post
Although the parts might be in good condition but, do u know how much have they been stressed before and when would they fail. also as said by one of the members, the performance might not be to the mark. its likely that most devices might start failing one after another. just another thought,if you convert the efforts put by you to find and desolder wont it be cheaper to buy new components from market.
Sure it will be cheaper to buy new parts! But there other situations envolved, when you are far away from big cities. There is some difficulty to have these parts due to the distance, even nowadays! There is also the need of recycling dead equipment. Brazil is becoming the worst place in the world in this issue! Piles and more piles of junk. So, there exists the need to do something! (sorry for the rough english).
Regards,
Max.
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Old 8th May 2010, 06:45 PM   #32
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Here are some photos. I'm almost finished.
Thanks everybody for the nice comments! Have a nice weekend!
Best regards,
Max.
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Old 9th May 2010, 12:37 AM   #33
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Quote:
Originally Posted by ChrisA View Post
Also I find a propane torch is much faster than the solder iron to remove parts from a PCB.
Got to try that torch trick!

I usually grab all PSUs, old amps and PC monitors for the parts hidden inside. Some parts are really valuable, like rectifiers, diodes, power transistors. Other parts are rather odd: I once found a TDA2006 in a monitor....

@smartx21: what is the general layout of this amp? Class A mono?

Last edited by EBM_dude; 9th May 2010 at 12:44 AM.
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Old 9th May 2010, 01:33 AM   #34
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Quote:
Originally Posted by EBM_dude View Post
Got to try that torch trick!

I usually grab all PSUs, old amps and PC monitors for the parts hidden inside. Some parts are really valuable, like rectifiers, diodes, power transistors. Other parts are rather odd: I once found a TDA2006 in a monitor....

@smartx21: what is the general layout of this amp? Class A mono?
Sorry, I wouldn't like to discuss about the specific type of the amp, due to restrictions imposed by the circuit's author, in order not to dimish its image beyond the forum. A small look around and you will find it, for being very familiar to this forum. Originally, it is said to be one of the best ever seen here.
Even though, after being operational, I will post the results.
Regards,
Max.

(I apologize for the rough english).
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Old 9th May 2010, 01:37 AM   #35
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Ah! I got it, thanks!
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Old 9th May 2010, 01:37 AM   #36
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Quote:
Originally Posted by EBM_dude View Post
. Other parts are rather odd: I once found a TDA2006 in a monitor....
Some monitors have embedded speakers, so need to be amplified. Although this seems to be a mono device.
Max.
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Old 9th May 2010, 01:40 AM   #37
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Nope, there weren't ANY speakers in this monitor. It was just the single TDA.
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Old 9th May 2010, 03:36 AM   #38
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Default Almost there!

Some details. Attempt to the output coil, removed from an IBM PC100 PSU! The 10R resistor is a bit out of especifications for the output power, but I will look for the correct one!
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Old 9th May 2010, 03:40 AM   #39
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Default First unit done!

It is past midnight, my wife must be angry with me...
This is the finished first unit.
Tomorrow I expect to have it tested!
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Old 10th May 2010, 02:34 AM   #40
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Default The answer is: YES, IT IS!!!

Well, definitely it is! The sound is SUPERB!
No need to adjust anything than bias! No problem, no excessive heat, only glory!
Thanks to very good project from the forum!!!
Of course transistors were all new, but sometime I will try with some old used parts.
Let me listen for a while.
Thanks!
Max.
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