Isolation Transformer wiring help!

[KonkeyKong]

This is from a Taito Frontline cab that was pretty much gutted when I got it.  I'd like to be able to use the isolation transformer to just power the monitor. It's not a basic iso as it's got 6 input wires.  I've tried several configurations with no success.  I can't for the life of me figure out how 1 & 2 get connected with 3,4,5,6,7,8.

[pbj]

Run a cord from the outlet in your wall to pins 1 and 2. 

Get out the multimeter and touch pairs of pins until you find two that give you 120VAC.

[chopperthedog]

5&3 or 8&6


good day.

[KonkeyKong]

Chopper - made perfect sense, but both combos blew fuses...

[chopperthedog]

1&2 are your supply (power from the wall) 5&3 or 8&6 will give you your isolated 120v.


good day.

[KonkeyKong]

there must be something whacky with the iso, I followed your directions to the "T", but no luck. The rest of the wiring that was left in the cab was awful so I'm not totally surprised.  Now to find a simpler in-and-out iso....

[pbj]

But since you didn't bother testing it with a multimeter, you'll never know for sure.

[ed12]

as pbj pointed out
use a mulit meter and meter the leads
it look's like a dual 117vac in which can confiqued as a 220vac in
it is in the wiring..so start there
also as was pointed out to u
u have to confiqure the primanry side to take 117vac or 220vac
best i can see is 1 to 8 and 5
2 to 6 and 3
which should confiquire it as a 117 vac input
the easy test
is remove all wires and measure between 8 and 6 low ohm's should read about 1-8 ohm's
and 5 and 3 this will tell u the winding's same readings
then for good measure chk between 1 and 2 .this should read open
if this is the case ? then follow ^^^^^^ what i stated and u should be gold

ed

[KonkeyKong]

measured... check.
1 to 8 and 5...check
2 to 6 and 3...check
plug it in...poof, blew fuse.
added another picture of my set up to help clarify. Numbers in circles correspond to those on the schematic.

[ed12]

try this
1 on the filter to 8
2 on the filter to 6
just that winding,and see if the fuse blows
the winding ohm's is right
if it dose not blow the fuse >>making sure there is 0 load on the secondary side<<
u should find 120vac at 5 and 3
plus on the secondary side where u want to tie in...
what u need to rember about these power transfomer is they are PHASE  depented
ie 0 to 0 /hot to hot
any other config expect for jumping to 220vac will blow the fuse

ed

[KonkeyKong]

rats!  fuse blew... that was my last one too.  Small town, stores all closed hours ago.  I sure appreciate all the help though.    I've got divemaster getting a quote on a brand new iso, they seem pretty reasonable, very close to used iso prices.  Plus with two wires in and two out i'll be way more confident with the set-up if i need to change things down the road.

[ed12]

well it could be a bad iso ?
for ppl like us
we tend to dig in a byte more..
but u are correct 10.00 for a iso is not bad,lord knows u do not need a hudge 1
>let the debate begin<,i have seen well's unit's tied to a 1amp job
when the main fuse call's for 3-5 amp ?,but if it make's it easier.? i am all for it

ed