(Topic ID: 215046)

Dr. Who Exploding Sound Card!

By PinPilot

5 years ago


Topic Heartbeat

Topic Stats

  • 19 posts
  • 7 Pinsiders participating
  • Latest reply 5 years ago by PinPilot
  • Topic is favorited by 1 Pinsider

You

Linked Games

Topic Gallery

View topic image gallery

9A5D0151-8207-43C7-8149-68008B3C567E (resized).jpeg
8C961857-6170-4C92-A0B2-CCBE2A8C459D (resized).jpeg
deep_fried (resized).jpg
20180419_141915-1 (resized).jpg
20180419_144440 (resized).jpg

You're currently viewing posts by Pinsider RocketFromTombs.
Click here to go back to viewing the entire thread.

#9 5 years ago

Same thing happened on my DW, it was C26 though.
https://pinside.com/pinball/forum/topic/dr-who-audio-board-cap-exploded
I replaced all the tantalum caps on the board, and all has been well.

-Brian

#13 5 years ago
Quoted from PinPilot:

Ok, now I'm a bit confused. It appears that audio board connector J501 brings in 20VAC through pin 1, with a trace that leads directly to the tantalum cap that exploded. My confusion is on the fact that it is my understanding that you never use polarized caps in an AC circuit, only "NP" or non-polarized. But the specs on the tant cap in the manual doesn't have an NP in the specs, making me think its just a normal polarized cap.
Looking at Dumbass's picture, it appears there is a small "+" sign on the right side of the blown cap. This would indicate polarized.
Brian, what exact cap did you buy to do the repair? Can you post a link?

I will try to remember to check exactly what I ordered when I get home from work and let you know. I am pretty sure I ordered tantalum caps from either Mouser or Digi-Key of the specs as the original or slightly upgraded.

-Brian

#18 5 years ago

Okay, it looks like I used 25V tantalum caps from Mouser. I would probably go with higher voltage if I did it again, but these are working okay.

-Brian

8C961857-6170-4C92-A0B2-CCBE2A8C459D (resized).jpeg8C961857-6170-4C92-A0B2-CCBE2A8C459D (resized).jpeg

9A5D0151-8207-43C7-8149-68008B3C567E (resized).jpeg9A5D0151-8207-43C7-8149-68008B3C567E (resized).jpeg

Promoted items from the Pinside Marketplace
4,000 (Firm)
Machine - For Sale
Gresham, OR

You're currently viewing posts by Pinsider RocketFromTombs.
Click here to go back to viewing the entire thread.

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!


This page was printed from https://pinside.com/pinball/forum/topic/dr-who-exploding-sound-card?tu=RocketFromTombs and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.