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(Topic ID: 208565)

Sound problems on CFTBL

By Mavmav

6 years ago

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19 posts
5 Pinsiders participating
Latest reply 6 years ago by gunstarhero
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#1 6 years ago

MAV

Hello guys!
I got my Creature from the Black Lagoon this week and the first problem arrived together!!!
I turned the machine on and the sound is super loud!!! It's on the 14. I tried to turn it down, but if it is lower (like 13, 12, etc) or upper (15,16, etc) it gets mute!
The problem is... the sound is super loud... really, impossible to play inside the apartment.
My options... super loud or mute.
Can someone help me?!? Any tips?!?
I reassembled the logic cable on the soundboard and changed the batteries on the main board... without success.
Help me guys... I was waiting for this machine and I want to play it so badly!!!
Thanks!!!

#3 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Quoted from gunstarhero:
Huh. Reseat the connectors in the backbox, especially the ones around the sound board?

Hi, I tried already... and nothing! It was my first try as always... disconnect and reconnect everything!
But no success... unfortunately.
Anything that I could try to test on the board maybe??? How????
Thanks for your help!!!!

#6 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Quoted from jfre81:
Everyone at your apartment building must wondering who needs to move their car.

kkkkkkkkk... for sure! kkkkk

#7 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Quoted from gunstarhero:
Volume up FULL and Can't turn it Down.
The volume control on all WPC games is electronic. On pre-WPC95 games, this is controlled by an electronic prom pot. This E-pot is a X9503, at location U5 on the sound board. If turning the volume up or down has no effect, and the volume is stuck on full blast, this is the first component that should be checked. Also the capacitor C18 (47 mfd, 25 volts) that connects to the E-pot can fail too, and should be checked.

Thanks again Gunstarhero,

I was reading about this... but sorry, how can I test this "U5"???

I have a multimeter... but I will need some help!!! kkkkk... Sorry... I have some skills... but not related to electronic components!

I need to test the U5 and the capacitor C18... can you help me with that?

I will appreciate your help!!! Thanks!

#8 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

I'm reading and searching a lot... and I found this old post:

I had a similar (same referenced chip) issue on an Addams Family.
I documented the Error and fix and pictures here:

http://purcellvillepinball.com/BallyWilliamsRepairs.html

Search for "U5".

But in summary:
SYMPTOM

The volume is very loud and not controlled by the service switch.
RESOLUTION

I sent an email on RGP and Chris Hibler responded that the digital pot X9503 is probably bad. I took it off and replaced with a socket and new chip and it worked great. Thanks Chris!

The U5 X9503 chip was removed and replaced with a socket and new chip.

Hope this helps.

#10 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Thanks for the links! I'm reading a lot!!!
Btw, I bought the x9503 (U5) and the capacitor (C18)... as soon they arrive, I will change it.... and I will let guys know!!! Thanks for your help! I appreciate that! Danke!!!!

#11 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

One doubt...

The U5 (e-pot X9503)... to change it... I need to desolder or is just to pop up and insert the new one????

Thanks!!!!

#12 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Is this one...

2018-01-28 10.05.41 (resized).jpg

1 week later

#15 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Hello!!!

I made it.... it is working perfect again!!!

It was pretty easy to change it! For my surprise, I made a clear and professional work!!!

The problem was the U5 as we suspected.

For exactly 3.99 euros I solved the problem! I'm super happy!!!

Thanks for the tips!!! You guys rock!!!!

Thanks again!

#16 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

IMG_3002 (resized).JPG

IMG_3005 (resized).JPG

IMG_3006 (resized).JPG

IMG_3007 (resized).JPG

#17 6 years ago

MAV

Mavmav

Pinside member

13y 25,150 30 2

Quoted from ChrisHibler:
You will need to desolder it. Be careful, the traces are delicate. No prying.
I'm fairly convinced that the IC has failed. Even though I try to save the IC, the easiest way to get it out is to use a sharp side cutter to cut the legs then remove each leg individually.
--
Chris Hibler - CARGPB #31
http://ChrisHiblerPinball.com/contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

Your tips helped me a lot! Thanks!

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