Rolling Thunder cab PSU

[derezz]

Hi everyone,
I hope someone can point me in the right direction -
What sort of PSU do I need to replace my knackered one in my RT
cab? Bit of a n00b when it comes to psu's I'm afraid.
Hope one of you guru's can help?

derezz2012-10-08 20:28:54

 

[ZedEx48K]

One word 'VACUUM!'

 

[derezz]

Ha. Yer sorry about that - it is in a bit of a state. It didn't work when I got it so I thought I'd get a new PSU and then get the dyson out

Still, anyone...?

 

[dazza1]

hi there,
basically the same,both power supplies are the same as a pacmania or galaga 88.
power brick is an atari ireland one,and the other is an Astec power supply model SA40-1304
darryl

 

[derezz]

Ah cheers dazza, that helps a lot. Now I need to find one

 

[andyman]

Or you could leave the transformer in place (assume working) and change the psu for a switcher, it looks like one that's been decased, no specific voltages required for RT afaik.

Get the meter out and check what's doing what first though

Andy.

 

[dazza1]

them astec ones are hard to find,you can use a jamma psu,but you will need to know what the wires are.
darryl.

 

[derezz]

I'll probably end up blowing myself up Don't know diddly about power supplies I'm afraid..but thanks for the replies though. I need to get a switcher then? I'll see if I can locate one. one other thing, the PSU is the thing at the top of the screen right?

 

[dazza1]

check the fuse first,its to the right of the square ac filter,has a warning sticker over it.
if that gone nothing will power up
darryl.

 

[derezz]

Had a quick look, fuse looked intact. I'll have to check it with a meter right?

 

[dazza1]

heres a picture of the same setup

 

[derezz]

Awesome. Thanks for your help guys. I'll clean mine up a bit and check the fuse tomorrow (need meter at work). Stay tuned!

derezz2012-10-02 21:13:08

 

[derezz]

RT LIVES!
PSU was ok in the end. It was the isolator switch that had snapped off in the 'off' position by the main power in

Quick trip to Maplins and £3.49 later, new switch, new flex, it lives. Just need to clean the CPO up now as it's in a bad way.

I'm a tad chuffed now !

 

[derezz]

Quick update ...and after it was powered up for more than 10 seconds, the psu is smoking more than Dot Cotton on a good day Look like I need a new one. Great!

derezz2012-10-08 21:22:08

 

[Luigi]

Hi guys.

Sorry for diggin' out such an old thread...but I wanted to know what this yellow wire is for. There are ~9.5Ohms to the blue wire and ~0.4 to the brown,

Any clue?

A friend of mine assumes that this is for different input voltages....220V or 230V. Can you confirm?

Cheers
Thorsten