Only two possibilities (well three actually)
1/ The caps are not what they seem (fake) and can not stand the voltage.
2/ They are fitted wrong way around.
3/ And finally they would blow up if you are applying AC and not DC to the board.
1/ The caps are not what they seem (fake) and can not stand the voltage.
2/ They are fitted wrong way around.
3/ And finally they would blow up if you are applying AC and not DC to the board.
where did you find room for six caps on a board that only has space for four?
saying you built it just like like the "scheme" would make you a liar...
is "elco" supposed to mean electrolytic as in capacitor?
things can't get frustrated but people can...
saying you built it just like like the "scheme" would make you a liar...
is "elco" supposed to mean electrolytic as in capacitor?
things can't get frustrated but people can...
i could be wrong but there doesn't appear to be any coil (output zobel) wrapped around the ten ohm resistor. it's possible that high frequency oscillation is killing the cap (hope your chip is still ok!)
That last picture shows the cap releasing the magic smoke.
BPS. The first thing to do is to wire it to a bulb tester to prevent any sudden explosions.
Looking at your first picture in post #1 and the later pictures and I would say the caps look to be fitted correctly.
You need to disconnect the amp from the power supply board, and then measure the DC voltages on the power board. Make sure you discharge the caps before connecting the amp back up
BPS. The first thing to do is to wire it to a bulb tester to prevent any sudden explosions.
Looking at your first picture in post #1 and the later pictures and I would say the caps look to be fitted correctly.
You need to disconnect the amp from the power supply board, and then measure the DC voltages on the power board. Make sure you discharge the caps before connecting the amp back up
They dont including schematic on this layout, i only get that layout (first post)
That write "/" i think the R is replacement for the L, cmiiw
Sorry for my poor english, its not my mother language 🙂
Will use the bulb tester, thanks for your advice sir
I always discharge them with R before connect or disconnect amps with psu, my meter says 33,5-0-33,5 at vdc, im using 24-0-24 vac with my ugly transformator
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no you would use enameled wire and wrap it around the resistor to produce a 7 micro henry inductor to create a low pass.
the physical size of the resistor is important so the wattage rating could well be 2 watt or greater that's why i was hoping to see the "schematic"
english is not my mother tongue so no worries, but being clear is important...
the physical size of the resistor is important so the wattage rating could well be 2 watt or greater that's why i was hoping to see the "schematic"
english is not my mother tongue so no worries, but being clear is important...
Before you next power it up you could solder a couple of wires to the caps that blow, and then connect these wires direct to your meter. Make sure you get the meter polarity correct and set the meter to the correct range.
Then when you switch on you will see in an instant if the voltage is reversed.
The resistor should be wrapped like this
10 Ohm 2w resistor with 10 to 12 turns of 22ga insulated wire
and did you install the jumper wire between the 22k and 1k resistors?
10 Ohm 2w resistor with 10 to 12 turns of 22ga insulated wire
and did you install the jumper wire between the 22k and 1k resistors?
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that what i thought too...
hard to read what's on the board could also be 0.7 uH around a 1 ohm 2 watt...( 1OR(1 letter O then R) rather then 10R(1 number 0 then R)
hard to read what's on the board could also be 0.7 uH around a 1 ohm 2 watt...( 1OR(1 letter O then R) rather then 10R(1 number 0 then R)
It is "correct me if im wrong"
Again, english is not my language, believe me I do my best here, and you are not so helping btw
Will do sir, should i make it down to 25vdc ?? I have 18vac output in my "transformer". I have plenty of 24 regulator ic here
I install the jumper sir, will make the L now, thanks for the tutor 😀
well i apologize i did not intend to offend you in any way, sorry. as someone who has had to overcome language barriers myself i guess my misguided attempt at some lighthearted humor is out of place, once again, sorry.
sincerely hope you can resolve your troubles.
p.s. i don't think internet acronyms are an effective or helpful means of communication as there is no accepted standard for them.
sincerely hope you can resolve your troubles.
p.s. i don't think internet acronyms are an effective or helpful means of communication as there is no accepted standard for them.
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Sir im little bit confused, 22ga, its awg or swg ?😕
Its 0,6mm & 1,2mm, i made both! Which one is right ? 😀
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