Bally invaders voltages

[astyy]

I suggest posting a photo showing what's melted

 

[Body pop]

Oh don’t know how photos didn’t load

 

[Arv]

Where did you buy this "project" from? You can remove the chip with a desoldering station. Post some pics of the board please.

 

[Arv]

U5 is the inverter from memory.

 

[Body pop]

Yes it’s a project alright ?

What’s the inverter do ,soldering onto a board would definitely be something I’d want to avoid .id likely melt the board

 

[Arv]

A Hex Inverter, it inverts things turns 0's into 1's and vice versa.

 

[stevebm1]

show us a pic,they can be repaired or my pinballs does new ones,depends on your budget

 

[Body pop]

Pics

 

[BigIan]

I could lend you my desoldering station, or even do it for you if you like?

I think i'm only around the corner from you (i'm in Ballyhackamore) I think I have a bally sound board you could borrow also

 

[stevebm1]

looks like that chip could have been caught by a hot soldering iron in the past?

 

[Body pop]

You’d be a legend if you could solder it mate

 

[Body pop]

looks like that chip could have been caught by a hot soldering iron in the past?

I never thought of that possibility .made it’s ok then ?

 

[Body pop]

You haven’t got a spare sound board to sell bigian by chance ,have u

 

[BigIan]

I will have a look this evening, but i think I have. You can borrow, worry about buying later...

 

[Body pop]

That’s the noise it’s making if it means anything to anyone .if it’s def the sound board or could be anything else ,grounds ,connectors etc ?

 

[stevebm1]

do you have another machine local to you to test that sound board in?,it does not have to be space invaders,just something of the same era would do?

 

[Body pop]

I’m not sure ,maybe bigIan does .
I had a problem with my fishtales when I had it ,there was a humb and no music .it turned out to be a ground .
But yeah if I can get that sound board tested that would get the possibilities down a bit

 

[Arv]

What happens when you press the test button on the sound board?

 

[Body pop]

Il check that later when I get at it again

 

[Body pop]

It doesn’t do anything when that switch is pressed .
I think I will change some more connectors and see it that helps ,as the lights aren’t going in any sequence either .

 

[BigIan]

The spare audio board I have is as-2888-1 also have a as-3107-9 in my vector. Don’t think either are of much use unless anyone knows better ?

Cheers
Ian

 

[Body pop]

Cheers Ian
I’ve managed to lose the flippers now .
I think the solenoid connectors have been the cause .

 

[Body pop]

Solenoid connector on the solenoid board that is

 

[Body pop]

It was the flipping connector that I had replaced going to the mpu that was causing the flipper problem .so at least it’s sorted again
Those wee connectors are a nightmare !

 

[pinballmania]

Currently looking at this sound board. Here’s that chip ‘caught by the soldering iron’

 

[Arv]

Nice, that will certainly do it.

 

[Body pop]

Nasty looking indeed

 

[Body pop]

Just an update on this and maybe more ideas
At the min it will play without sound .lights no t sequencing but staying lit ,and score boards have gone
All Boards tested working ( sound board untested as yet )
I’m getting 5 v at lamp driver board
But not getting a steady voltage at the scoreboards
Any ideas what to try next ,ive changed a few
Connectors and rubbed a few others with sand paper ,those connectors are a nightmare !