I am buiding a monoblock kit and i have checked all the connections, but I still have no power going through the unit. I can't even blow a fuse or anything. How/where do I start to trouble shoot. Here are some pics, most everything is soldered except where I had to extend some wires. The power switch and a few other things are just hanging out until I figure out what is going on. I do have a multimeter, but I'll i could figure out was that it was operating at 60 volts. Im new to this electrical stuff.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Start with the line plug (unplugged!). Using an ohmmeter or a continuity checker, connect between each power cord prong and the transformer primary (switch "on"). If you have continuity, you've got a transformer issue. If you don't, then leave the ohmmeter lead connected to the power cord prong and with the other lead, start working back to the power plug until you find where the connection is lost.
I don't know what the issues is, but you need to put some rubber grommets in those holes as you have high voltage wires passing through holes in metal with sharp edges. Also, the fuse should be before the switch -- connected directly to the power inlet.
guys at audiokarma said the same thing about rubber grommets, and I will put those in. right now there are NO nicks/cuts or anything on the wires coming through the holes.
im not sure I follow about the fuse, should it be in line coming from the EIC plug to the switch?
im not sure I follow about the fuse, should it be in line coming from the EIC plug to the switch?
maybe im explaining my problem wrong
i have 60 volts moving through the EIC plug. so there is power to the unit, but i don't know if its going anywhere from there.
I touched both ends of the fuse, and there is an ohm rating. does that mean anything?
i have 60 volts moving through the EIC plug. so there is power to the unit, but i don't know if its going anywhere from there.
I touched both ends of the fuse, and there is an ohm rating. does that mean anything?
Check your connectors
Hi
So you have mains going into the transformer?
And voltage coming out?
I second dsavitsk in recommending grommets. I am sure i can see one of the black wires been stripped as its scraped along the hole...a disaster waiting to happen.
I am not perfect but I dont like those dreadful crimp connectors.. i prefer solder and heat shrink for all and often use 2 or 3 layers of heat shrink.
Again I do not mean to criticise but some of your solder joints may be dry by the look of them
Good luck
Take it easy play it safe and methodical (read the safety directions)
Nick
Hi
So you have mains going into the transformer?
And voltage coming out?
I second dsavitsk in recommending grommets. I am sure i can see one of the black wires been stripped as its scraped along the hole...a disaster waiting to happen.
I am not perfect but I dont like those dreadful crimp connectors.. i prefer solder and heat shrink for all and often use 2 or 3 layers of heat shrink.
Again I do not mean to criticise but some of your solder joints may be dry by the look of them
Good luck
Take it easy play it safe and methodical (read the safety directions)
Nick
Re: Check your connectors
one main from the transformer goes to the EIC, and the other to the fuse.
it must be completing a circuit because i show 60volts at all points along this path.
the wires are NOT scraped.... i will wrap them to be on the safe side until i find the grommets.
this is my first soldering job and i think my iron is way to weak, it takes forever to melt. Is there such thing as too much solder?? what does dry mean?
duderduderini said:
one main from the transformer goes to the EIC, and the other to the fuse.
it must be completing a circuit because i show 60volts at all points along this path.
the wires are NOT scraped.... i will wrap them to be on the safe side until i find the grommets.
this is my first soldering job and i think my iron is way to weak, it takes forever to melt. Is there such thing as too much solder?? what does dry mean?
Try this
Go to here it seems a decent site
http://www.instructables.com/id/How-to-solder/
When you say 60 volts.. whats the volts at the power point? what are the ratings of the transformer?
As i found out a good soldering iron is essential if you are going to do this more. 700 to 800 degrees tip temp with enough mass to sink heat into things you are soldering. Most irons are for solid state. For tubes think binford.
Good luck
Nick
Go to here it seems a decent site
http://www.instructables.com/id/How-to-solder/
When you say 60 volts.. whats the volts at the power point? what are the ratings of the transformer?
As i found out a good soldering iron is essential if you are going to do this more. 700 to 800 degrees tip temp with enough mass to sink heat into things you are soldering. Most irons are for solid state. For tubes think binford.
Good luck
Nick
wiring in the fuse
Hi Again
Look at this post
http://www.diyaudio.com/forums/showthread/t-65709.html
post number 15
Hope this helps
Nick
Hi Again
Look at this post
http://www.diyaudio.com/forums/showthread/t-65709.html
post number 15
Hope this helps
Nick
thanks for the link.......i think im using way to heavy solder for one thing.
as for the 60 volts... thats what is coming through the EIC, from my power cable.
i dont know how to tell what is coming out of the transformer
as for the 60 volts... thats what is coming through the EIC, from my power cable.
i dont know how to tell what is coming out of the transformer
Re: wiring in the fuse
that was my original thread a LONG time ago.... i followed all the info there
im not sure whats going on.... i think it might be the positioning of the fuse.
duderduderini said:
that was my original thread a LONG time ago.... i followed all the info there
im not sure whats going on.... i think it might be the positioning of the fuse.
110 or 240 volts?
Hey
whats your main voltage? 110 220 or 240 volts.
Shouldnt that be coming through the iec socket (multimeter between the L and N terminals.. be careful)
Hey
whats your main voltage? 110 220 or 240 volts.
Shouldnt that be coming through the iec socket (multimeter between the L and N terminals.. be careful)
Re: 110 or 240 volts?
110 v. when I measure the L and N terminals i show 60 volts.
duderduderini said:
110 v. when I measure the L and N terminals i show 60 volts.
I can remember staying up till 2 in the morning trying to finish the wiring of a previous amp. Hooked up the multi-meter to check the B+ voltage and got something completely different to what I expected. Frustrated I went to bed thinking I had screwed something up completely. In the morning I re-checked, finding that I had the meter set to AC instead of DC when I had tried to check the voltage. Turns out I had not mis-wired anything, and the amp was fine.
My point is that it sounds like you are very new to this, so check that you set the multi-meter to read AC voltage from the mains to the transformer and also from the output of the transformer. After the rectifier you will need to set your multi-meter to DC to read the voltages.
Hope I have not been teaching you to suck eggs here, just trying to help, as 60 volts out of the mains is way wrong...
Chris
My point is that it sounds like you are very new to this, so check that you set the multi-meter to read AC voltage from the mains to the transformer and also from the output of the transformer. After the rectifier you will need to set your multi-meter to DC to read the voltages.
Hope I have not been teaching you to suck eggs here, just trying to help, as 60 volts out of the mains is way wrong...
Chris
Thats what i thought
I second that thought.
I am by no means a ninja tube head like most on this forum, i learnt the hard way. I certianly hope I am not teching you to suck eggs either, but 60V is not right.
It should be 110V ac if you are in the US
Nick
I second that thought.
I am by no means a ninja tube head like most on this forum, i learnt the hard way. I certianly hope I am not teching you to suck eggs either, but 60V is not right.
It should be 110V ac if you are in the US
Nick
im just lost, maybe I dont know how to use this multimeter....
now i get no readout on any voltages. i have the meter on DC and its marked "20". I touch the black test lead to the "L" and the red lead to the "N" and I get a 0 on the readout
now i get no readout on any voltages. i have the meter on DC and its marked "20". I touch the black test lead to the "L" and the red lead to the "N" and I get a 0 on the readout
try ac
There shouldnt be any dc on your mains so thats good
Pop it on "ac" if it isnt autoranging then select the appropriate scale
Try that
There shouldnt be any dc on your mains so thats good
Pop it on "ac" if it isnt autoranging then select the appropriate scale
Try that
Re: try ac
i get nothing on AC either...... just switched around the wiring so that the fuse is inline from the EIC to the switch.
so right now..
I have the "L" going directly the fuse. From the Fuse to the switch. From the switch to the black wire leading to the transformer. The other black wire from the transformer goes to the "N" on the EIC.
does this sound right??
duderduderini said:
i get nothing on AC either...... just switched around the wiring so that the fuse is inline from the EIC to the switch.
so right now..
I have the "L" going directly the fuse. From the Fuse to the switch. From the switch to the black wire leading to the transformer. The other black wire from the transformer goes to the "N" on the EIC.
does this sound right??
Try changing chords
Just try that. Plug something into your powerpoint to see if it works so you know you have power there at least.
The fuse thing sounds right. But if you havent got 110 coming in then I dont know
Just try that. Plug something into your powerpoint to see if it works so you know you have power there at least.
The fuse thing sounds right. But if you havent got 110 coming in then I dont know
something very basic is wrong. you should see at least 115VAC. 60VAC sounds more like electric field coupling into the meter. Somethings open circuit here.
I notice there's a long protrusion on the L terminal of your IEC connector. Could it be another fuse?
Check continuity from the live pin on the outside of the case to the live pin on the inside.
This has to be something very simple that we're all overlooking.
I notice there's a long protrusion on the L terminal of your IEC connector. Could it be another fuse?
Check continuity from the live pin on the outside of the case to the live pin on the inside.
This has to be something very simple that we're all overlooking.
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