Re: IJ Flashers are not working (not door switch)

On Oct 26, 9:45 am, psk445 <psk...@xxxxxxxxx> wrote:
On Oct 24, 7:25 pm, David <davidthomasmo...@xxxxxxxxx> wrote:



Hi all,

I am having some trouble with my Indiana Jones pinball (williams).
Yesterday all of theflashersstopped lighting up all at the same time
while playing.  When I go into the test mode, I press the door
trigger, and only the plane LED/super ball light up out of all the
flashers.

I have done some research from past posts and done some initial
investigation based on what I read.  I looked at fuse F111 and it
appears fine, but I guess I need to take it our and test it to be
sure.

Question 1:  What is the best way to remove this fuse?  Do I need a
special tool?
Question 2:  What is the best tool to test the fuse and see if it has
been blown?  I know they can look fine and still be blown sometimes,
so I want to be sure.
Question 3:  Since the plane LED/Super ball light work, should i be
looking places other than the fuse?

Here are a couple of other interesting facts:  LED 5 is not lit on the
Power drive board.  Don't know if this matters, but on the WPC CPU
Board Assembly, LED D19 is not lit and D20 is flashing.

Question 4:  Should LED 5 always be lit?
Question 5:  What tools do I need to see if the proper power is
getting to the board to power theflashers?

I am a little lost on what to do next and some of the previous posts
which indicate a possible path are a little advanced for me to
understand.  If anyone can offer some help, I would really appreciate
it.

David see my previous post about this same exact problem (turned out
to be a shorted lamp socket.)http://groups.google.com/group/rec.games.pinball/browse_thread/thread...
JJ

Thanks for the link, JJ.

But I'm not sure its the same problem since I don't think my fuse is
blown. Unless I have tested it wrong as I asked in my latest post.

Should I try to unplug the J connectors which apply to flashers and
see if my 20V comes back up?

Should I replace the fuses just to see if they could be bad but not
blown?

I have been reviewing this

http://www.pinrepair.com/begin/index.htm

and it has been giving me some good insight on board repair. To
answer Lloyd's earlier question, I would love to run a couple more
tests and see if the repair would be a simple bridge. But if it ends
up needing a removed/replaced chip or something more difficult I'll
have to get a pro.

Thanks for offering the previous answers.
.

Relevant Pages

  • Re: Yamaha R-50 receiver failed
    ... After checking things like the power cord and outlet, ... removed the cover and found a blown slow-blow fuse close to the the ... I replaced this 250v 4a fuse and now the receiver ...
    (sci.electronics.repair)
  • Re: Yamaha R-50 receiver failed
    ... After checking things like the power cord and outlet, ... removed the cover and found a blown slow-blow fuse close to the the ... I replaced this 250v 4a fuse and now the receiver ...
    (sci.electronics.repair)
  • Re: TECH :NGG
    ... check and see if the ones not working are common to one ... fuse, if so with power off check it. ... If blown replace it, if it blows again, ...
    (rec.games.pinball)
  • Re: EBD power supply question
    ... If I remove the F4 fuse (the solnoid fuse, which I failed to mention in the ... earlier post that it was blown along with the Varistor) then the game will ... you could pull J5 and J6 and power it up with a new main fuse ... I suspect you have a blown rectifier on the output. ...
    (rec.games.pinball)
  • Re: Panasonic TV - TC-25V30R - fuse blows repeatedly
    ... supply would have to be first serviced, and then the horizontal output ... main fuse holder. ... check for any bad power transistor in the supply section (since power ... I think of first confirming if the SMPS is good, ...
    (sci.electronics.repair)