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various lights
Posted: Fri Mar 05, 2010 8:57 pm
by paulblackett
Hi, jst wondering if any one could help me, when i switch my machine on various lights come on and stay on about 8 or 9 including 1 ov the hold keys, any help would be welcome,
the machine is a mazooma, disco inferno, scorpion 4. ive uploaded a pic if any one can help.
Thanks.
Posted: Mon Mar 08, 2010 12:46 pm
by lee
you have a faulty transistor on your MPU,it is shorted and thats why it is staying lit.The lamps in a machine are multiplexed and they are in batches of 8 and when a transistor goes short it lights up the amount you see and not just one
Posted: Mon Mar 08, 2010 5:47 pm
by paulblackett
cheers for the reply mate, is it worth repairimg or do u know were ile get anotha board from.
cheers paul
Posted: Wed Mar 10, 2010 1:31 pm
by lee
it is always worth repairing for the sake of a transistor to £20-£30 for a board
Posted: Wed Mar 10, 2010 6:11 pm
by paulblackett
do you know who or were i wil get it repaired mate, had the board out of the machine, cant tell which ones blown, if i knew which 1 has blown, i cud change it with 1 of me old board, is there a diagram or something relateing to the various lights lit, wich wud correspond o a particular ressistor
cheers
Posted: Thu Mar 11, 2010 12:17 am
by 6502
Use a bit of logic,
Note all the lamps that are lit,
then look for a 'common' colour wire that they all use,
and trace it back to the appropriate connector,
then note what pin it is,
meter it from there and stuff............
simples ;-)