Re: Re: Non Working K5 (almost done)

Here's what I got:

In order (V)
              01 02 03 04 05
  Wires       R1 BK R2 O1 O2
1.red(1)      -- 12 24 20 10
2.black       12 -- 12 10 00
3.red(2)      24 12 -- 00 10
4.orange(1)   20 10 00 -- 12
5.orange(2)   10 00 10 12 --

              00001 00002 00003 00004 00005
  Wires       RED 1 BLACK RED 2 ORNG1 ORNG2
1.red(1)      ----- 11.80 23.6  19.16  9.56
2.black       11.80 ----- 11.80  9.76  0.28
3.red(2)      23.6  11.80 -----  0.16  9.55    
4.orange(1)   19.16  9.76  0.16 ----- 11.79
5.orange(2)    9.56  0.28  9.55 11.79 -----



g0ory-XZoyATsUNX5Wk0Htik3J/[email protected] a écrit:

> Hi Nick,
>
>     I measured the transformer this evening for you whilst replacing
> my backlight :-)
>
>     If you look at the transformer connector that plugs into the PSU
> circuit board, you'll notice the colours of the wires from top to
> bottom is Red, Black, Red, Orange, Orange.
>
> The AC voltage between the first (top) red and the black is 9.96V,
> between the black and bottom most red wire is 10.54V, and across the
> two reds is 19.57V.
>
> Across the two orange wires is 9.6V
>
> On the power supply, the regulators are 7805 which gives +5 at 1A
> maximum, 7806 +6V at 1A maximum, 7906 -6V at 1A maximum and a very
> small regulator like a transistor a 79L15 (-15 at 100ma).
>
> Each regulator needs about 3V headroom to work correctly. So you may
> have a choice with the transformers. Please check the windings on the
> secondary thoroughly, but I think it is (red-black-red 10-0-10) and
> (orange-orange 0-10). I hope - check it please! If you run from too
> high an AC voltage the regulators may get hot and the heatsink isn't
> really up to much abuse...
>
> The only problem is the original 'low profile' transformer - you
> might get something similar, or perhaps a toroidal one????? ;-)
>
>
> Back to the backlight. Mine came from backlights.co.uk, and they did
> an excellent job, it arrived very fast, and the contacts were not far
> off the original. I don't intend to advertise, but the lights are
> nice :-) The bit about undoing the aluminium clip isn't really
> necessary, They slide in nicely. Quick repair, nice result, enough
> said!
>
> Cheers, Nick
>
> Adam
>
>
> --- In [email protected], "tuff_gnarl_69" <[email protected]>
> wrote:
> > Hi, its nicccck  , sorry to bother you again, ive already found the
> > problem. Its the transformer. The primary is open, so i had 220v on
> > the input, but no current was going thru it. I checked continuity,
> > and resistance but i couldnt measure any. So i came to the
> > conclusion that the primary is open.
> > Ive already checked the schematics, but in order to get a new
> > transformer i need to know the ac outputs. They arent specified on
> > the schematics .
> > so if anyone is willing to help me ill keep checking my mail.
> >
> > thanx a lot ,
> > sorry to bother yyou again really .
> > bye
> > nic


-- 
Antoine Deschênes /aka
  -´¯`-¸-DragonMaster-¸-´¯`-
http://thehotcom.deep-ice.com/



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