newbie

[Damaikon]

Hi people just a post to say hello and to ask if any one repairs pcb as I have a 1980 Taito space invader game board not working

,Best regards Rob

 

[TheDaddy]

Welcome to ukvac robin , there is a frw on here who repair. Have you checked voltages , removed and cleaned all socketed chips ?? Always check these first.

Also is it playing blind or not firing up at all ?? Maybe some pics would help.

Dave.TheDaddy2020-03-01 20:28:32

 

[Damaikon]

hi Dave thanks for the info,it does fire up with lines across the screen, have check and re-seated all removable chips but still the same

 

[TheDaddy]

Have you tried coining it up and trying to start the game to determine if it plays blind ? Just yo be sure its a pcb fault no a screen fault.

Dave.

 

[qjuk]

Hi Rob,

Welcome to the forum

As Dave said, check voltage to the board if you’ve not done already.

VectorGlow has previously repaired a few of my boards in the past so you can always drop him a PM to inquire about repairing yours.

 

[Damaikon]

ok thanks for info,I,m going to check supply voltage tomorrow then take it form there,I have put afew coins through but no joy Dave

 

[TheDaddy]

Ok good luck

Dave.

 

[Damaikon]

Hi people
i've checked all the voltages on G and T connectors and supply all seems ok, there are 4 push pins at the back of the money draw but not sure what for???.

i also have replaced 47ohm resistor on the monitor supply board as it did'nt look healthy so now when i boot up the white lines are now straight,is there a way i could put a composite video signal to see if all's well with the screen?

any help much appreciated

rob

 

[virtvic]

If yo uget the space invaders pinout you can see which pins are video and video GND and tap in a composite signal there to check the monitor.

 

[Damaikon]

ok i've managed to locate pin-outs for composite video and have attach a B/W cctv camera and all's good with the screen

so any help with what next,there are some legs on the green 104k HEC bottom board broke off on one side could that be an issue

cheers for the help people