F-14 Williams light help needed

Djkus

New member
Joined
Oct 26, 2010
Messages
25
Reaction score
0
Location
Belfast, Down, United Kingdom
Hi. I decided to finally replace the bulbs on my machine which don't work.
Turns out the bulbs are ok, I've also swapped entire light socket and diode over to be sure it wasn't faulty sockets/diodes.

On the right of machine,the whole entire right of playing field (target line) don't light.
I've traced the wire t the main board and wonder if the transistor could be faulty,causing all these lights not to go on.. Voltage is ok on the sockets.

Anyone have any advice for me please?
 
F-14 Lamp matrix fault

So, i think I've traced the fault back to the transistors in the lamp matrix..
so i replaced the one which controls these lights i have off...
same thing..

i also replaced 5 of the big ceramic resisters which were desoldering themselves from the board due to heat..

new resistor is desoldering itself now. it gets that hot!

when i short the bulbs to ground.. they do light up, so voltage is ok i assume.

any help much appreciated.
 
Back
Top Bottom