Starwars trilogy blinking ,not working

[Body pop]

Can anyone point me to where the test points are for the 5v on these
Thanks

 

[Moonraker]

Turn the machine on and you should have 4 red leds lit which will tell you that you have 5V...

 

[Moonraker]

Although the manual does say they will show 50, 20 12 and 18 volts...

 

[ronnie63]

Should be here marked red, put neg lead on one of the securing screews

 

[Moonraker]

J16 pins 4 to 8 have 5v and might be a good place to look...

 

[Body pop]

Thanks guys ,I'm getting 4.9 at that red mark
How do I go about taking a reading at those pins ,just with connector on there or take it off and read from connector ?

 

[Moonraker]

Thanks guys ,I'm getting 4.9 at that red mark
How do I go about taking a reading at those pins ,just with connector on there or take it off and read from connector ?

You can leave the connector on.

 

[Body pop]

I'm getting a good 5 v on both boards ,
I got the wrong ribbon cable ,for between the two boards ,so have the proper one on the way now

 

[Body pop]

So the 5v is good on both boards and the ribbon can between them is replaced .
It's still doing the same thing
Is there anything else I can try myself ?

 

[chris b]

if the board has had lots of battery damage then its more than likely scrap

 

[Body pop]

I haven't had batteries in it ,since it it was repaired before ,so hoping I can find someone maybe to look at the boards .ive sent a few emails ,see if anyone gets back .

 

[andrew.m]

your fault is on the pal chip thats the smaller one next to the batteries all the gi is flashing like an alarm then thats where you problem is not voltages or ribbon cables if it socketed flip it out clean the legs and pop it in if the battery damage has come back in to the socket or chip then your in trouble

 

[Body pop]

 

[Body pop]

Thanks ,I can't actually see any small socketed chips
Would you be able to point it out .

 

[andrew.m]

bad news buddy it u213 if you scrolll up this post a bit you will another picture of a white star pcb and it socketed so are some aren't also I clearly see yours is battery damaged around that area so you will need a new pal chip dedicated to Star Wars and a socket and somebody who knows what there doing to fit it

 

[ronnie63]

I never knew the pal chip was game specific! I thought it would only be the roms, that could save me a mistake in the future!

 

[Moonraker]

They're not game specific except for Sharkey's shootout.

 

[Moonraker]

I've repaired worse than that but would need a similar era of machine to test the board in.

 

[andrew.m]

They're not game specific except for Sharkey's shootout.

theres 4 different types. they normally have a coloured dot on them but looks like the acid has got there first

 

[Body pop]

Thanks guys .It was just sent to someone that knows what they doing today
Are those pals hard to come by ?

 

[andrew.m]

american ebay 15 dollars