whitewater fall

[studley67]

my water fall appears to get all screwed up after a few minutes of power on.the 2 black square thingys ? at the bottom of driver board seem to get hot to touch.can anyone enlighten me,regards damien

[Strangeways]

Pictures please ?

Do you mean the GI connectors - bottom LHS ?

[studley67]

no nino.i dont know what they are,ill take the board out and photo it.

[studley67]

pic

[studley67]

removed board today,found out the black square thingys are in fact vertical bridge rectifiers.never seen theese before.so,they probally would get a bit hot.still none the wiser on why after a few minutes of power on the water apears to run up hill???

[ajlaird]

removed board today,found out the black square thingys are in fact vertical bridge rectifiers.never seen theese before.so,they probally would get a bit hot.still none the wiser on why after a few minutes of power on the water apears to run up hill???

Yes, you would expect bridge rectifiers to get a bit warm.

To me the problem sounds like the clock signal is out, but the clock signal is not generated on the chase lamp board. It is generated on the power driver board.

[studley67]

thanks,will have to get some schematics

[ajlaird]

What you need to do is check the timing on the clock and data signals on the two chase lamp boards. Check the timing when first switched on and working correctly, then check again when not working correctly. (Eg count how many pulses per 30 seconds.)

[The pinballist formally known as Dean Morgan]

Hey Studley, whats happened to your avitar picture?  Cant see it

[studley67]

Hey Studley, whats happened to your avitar picture?  Cant see it

is that better dean,i had to load it another way as it wasn`t loading from the web.gremlins i think @.@p.s hows that board?sorted it out yet?and daniels sys 80b?