Tends TA10 negative or positive grounded

emperor · 17th April 2007, 11:57 AM

hi guys

i dont want to fry my Trends up, a rather basic question, but would rather ask and look silly, than make a big mistake.

I have bought some croc clips, , a DC plug, and got some wire so i can affix a battery to my trends. Im just wondering if the Trends is negative grounded, does that mean i solder to the outer metal sheath, and positive to the inner metal pin. And if its positive grounded, its vice versa?

just making certain thanks for any info.

emperor · 17th April 2007, 01:35 PM

Tried to delete this post, as its like ritual humiliation, ha ha ha, but where as you Hobbyists (obsessives) cough, started messing with electronics when you were in nappies, i didnt pick up a soldering iron till last year.
(mistaken for a hot screwdriver)

Anyway, once again ive learnt something new, and not obliterated my amp yet, we can but hope

dweekie · 17th April 2007, 11:09 PM

Look on the power supply and there should be a nice picture. Pos center, Neg outer. Looks like you got it right.

emperor · 18th April 2007, 08:49 AM

Yes Dweekie, working a treat. Ironically your name, used to be my nickname in primary school. lol Dweekie Deeks

Pano · 18th April 2007, 11:41 AM

Strange.... I thought I replied to this thread last night - and that the content was a bit different. I was feverish and dizzy last week, but feel fine this week. Or maybe not.

Oh well. Good to see that you got it sorted.

Center is Positive. Don't reverse it or you will kill the chip. Enjoy the music!

dweekie · 18th April 2007, 12:56 PM

I reversed mine very briefly and it didn't kill the chip. It didn't boot up the first time, and I was right to assume I got the leads wrong. After switching it, it turned on just fine. I guess I got really lucky, or Trends buit in some protection at some point.

emperor · 18th April 2007, 02:13 PM

It was after reading David Kans review on 6 moons that i read about his accident that burned the chip out. Also in the beginning when looking at the diagram, and not using any common sense i decided that it was positive ground. Only after closer inspection of a diagram online, as i wanted to check it, did i find it was negative ground. Nearlly, nearlly soldered it the wrong way round.

Im getting the Tank caps, and Auricap, input caps, + heatsink soon, that should add more fun. All thanks to Panos mods.

Puffin · 18th April 2007, 02:55 PM

emperor. You can get a fantastically indispensable gadget from Maplin for 99p which tells you which way a power supply with a 2.1 or 2.5 mm plug is wired. It has 2 LED's one lights up if the centre is + or the other if it is -. Best thing I ever bought for 99p!

Oh nearly forgot, both light up if the current is AC not DC. Brilliant.

Pano · 18th April 2007, 09:00 PM

That's super cool!

Wonder if there is a source in the USA?

Puffin · 19th April 2007, 10:24 AM

It's called a polarity checker. I see they are now £1.49 !

http://www.maplin.co.uk/Search.aspx?...source=15&SD=Y

17th April 2007, 11:57 AM	#1
emperor diyAudio Member Join Date: Aug 2002 Location: Suffolk ,England	Tends TA10 negative or positive grounded hi guys i dont want to fry my Trends up, a rather basic question, but would rather ask and look silly, than make a big mistake. I have bought some croc clips, , a DC plug, and got some wire so i can affix a battery to my trends. Im just wondering if the Trends is negative grounded, does that mean i solder to the outer metal sheath, and positive to the inner metal pin. And if its positive grounded, its vice versa? just making certain thanks for any info.

18th April 2007, 11:41 AM	#5
Pano diyAudio Moderator Join Date: Oct 2004 Location: SW Florida	Strange.... I thought I replied to this thread last night - and that the content was a bit different. I was feverish and dizzy last week, but feel fine this week. Or maybe not. Oh well. Good to see that you got it sorted. Center is Positive. Don't reverse it or you will kill the chip. Enjoy the music! __________________ Take the Speaker Voltage Test!

18th April 2007, 09:00 PM	#9
Pano diyAudio Moderator Join Date: Oct 2004 Location: SW Florida	That's super cool! Wonder if there is a source in the USA? __________________ Take the Speaker Voltage Test!

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17th April 2007, 01:35 PM	#2
emperor diyAudio Member Join Date: Aug 2002 Location: Suffolk ,England	Tried to delete this post, as its like ritual humiliation, ha ha ha, but where as you Hobbyists (obsessives) cough, started messing with electronics when you were in nappies, i didnt pick up a soldering iron till last year. (mistaken for a hot screwdriver) Anyway, once again ive learnt something new, and not obliterated my amp yet, we can but hope

17th April 2007, 11:09 PM	#3
dweekie diyAudio Member Join Date: Sep 2006	Look on the power supply and there should be a nice picture. Pos center, Neg outer. Looks like you got it right.

18th April 2007, 08:49 AM	#4
emperor diyAudio Member Join Date: Aug 2002 Location: Suffolk ,England	Yes Dweekie, working a treat. Ironically your name, used to be my nickname in primary school. lol Dweekie Deeks

18th April 2007, 12:56 PM	#6
dweekie diyAudio Member Join Date: Sep 2006	I reversed mine very briefly and it didn't kill the chip. It didn't boot up the first time, and I was right to assume I got the leads wrong. After switching it, it turned on just fine. I guess I got really lucky, or Trends buit in some protection at some point.

18th April 2007, 02:13 PM	#7
emperor diyAudio Member Join Date: Aug 2002 Location: Suffolk ,England	It was after reading David Kans review on 6 moons that i read about his accident that burned the chip out. Also in the beginning when looking at the diagram, and not using any common sense i decided that it was positive ground. Only after closer inspection of a diagram online, as i wanted to check it, did i find it was negative ground. Nearlly, nearlly soldered it the wrong way round. Im getting the Tank caps, and Auricap, input caps, + heatsink soon, that should add more fun. All thanks to Panos mods.

18th April 2007, 02:55 PM	#8
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	emperor. You can get a fantastically indispensable gadget from Maplin for 99p which tells you which way a power supply with a 2.1 or 2.5 mm plug is wired. It has 2 LED's one lights up if the centre is + or the other if it is -. Best thing I ever bought for 99p! Oh nearly forgot, both light up if the current is AC not DC. Brilliant.

19th April 2007, 10:24 AM	#10
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	It's called a polarity checker. I see they are now £1.49 ! http://www.maplin.co.uk/Search.aspx?...source=15&SD=Y