(Topic ID: 196820)

Super Weird LOTR Sound Issue


By DANGERTERROR

1 year ago



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  • 9 posts
  • 4 Pinsiders participating
  • Latest reply 1 year ago by db666
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    #1 1 year ago

    The LOTR machine I operate started doing something weird: The main symptom is that all sound dies and then magically returns. I can go into the sound test and everything's fine when the sound is working, which is for a few minutes at startup. The weirdest thing is that occasionally the machine -- in attract mode -- emits a screeching 2-3 seconds of max-volume whistle, like it's the end of the day at an olde tymey factory. It's so bad I disconnected the speakers in order to continue operating it, as it was terrifying players throughout the joint. Here's what I know:

    *Reseating the J16 to CN2 didn't solve the problem. Although it brings the sound back temporarily by rebooting the CPU.
    *Reseating U7 didn't solve the problem. Running snd ROM u7.101.
    *I didn't have time to take voltages yet, that's next.

    Any ideas? Seems like a board issue, but I guess I could try replacing the sound ROM.

    Bonus: CPU/Sound Board 520-5300-00 Rev A (mine has a blue dot) is unavailable everywhere, so that's concerning. Anyone know where I can get a spare Whitestar CPU to toss in here if I need to send this out for repair?

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    #2 1 year ago

    I had the DAC go out in my RCT and it made it do weird things, made the sounds weird and at full volume. Id start there.

    #3 1 year ago

    The DAC as in a digital to analog converter chip? Interesting... I can check that out. Is it surface mounted or through hole?

    #4 1 year ago

    yeah the digital to analog converter chip and its through hole.

    #5 1 year ago

    I have had a very similar issue with mine in the past couple of months. My repair guy said that the issue is with a Stern custom surface mount chip that is at fault and that it is not repairable. I don't know which chip. He loaned me a spare board in there while the original was being assessed and it has been fine the whole time.

    The Stern distributor here didn't want to touch it. He said I could maybe see if Stern could repair but given I'm over in Oz it seemed too hard. I have a new board on the way.

    #6 1 year ago

    How did you get your new board?

    #7 1 year ago
    Quoted from db666:

    ... My repair guy said that the issue is with a Stern custom surface mount chip that is at fault and that it is not repairable...

    It's certainly repairable.

    I also have replacements. Email me.

    --
    Rob Anthony
    Pinball Classics
    http://LockWhenLit.com
    Quality Board Work - In Home Service
    borygard at gmail dot com

    #8 1 year ago
    Quoted from Borygard:

    It's certainly repairable.
    I also have replacements. Email me.
    --
    Rob Anthony
    Pinball Classics
    http://LockWhenLit.com
    Quality Board Work - In Home Service
    borygard at gmail dot com

    Done. Thanks!

    #9 1 year ago
    Quoted from DANGERTERROR:

    How did you get your new board?

    Mine is on its way from Ksarcade but they look to be out of stock now.

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