CPS1 with crackling and random sound **FIXED**

Fixed a PCB? Tell us how!
Forum rules
You can add Repair Logs to the Wiki here.
User avatar
Posts: 583
Joined: June 23rd, 2010, 5:45 am
Location: New Zealand, Wellington
Initials: KLM

CPS1 with crackling and random sound **FIXED**

Postby rugdoctor » August 17th, 2015, 11:07 pm

I was testing my Final Fight pcb last night and was noticing crackling and random sound output from the PCB. The board looked clean and scratch free so the first thing I looked into was the sound ROM section of the board. I took note where the YAMAHA sound chip branches into and systematically remove and replace the socketted chips from that section.

The replacement of some of the chips did clear up the background crackling sound but the money shot was the "ROM1" which made the most difference. So keep all your dead CPS1 boards, brilliant for parts.

User avatar
Posts: 444
Joined: April 20th, 2013, 4:45 pm
Location: Portugal

Re: CPS1 with crackling and random sound **FIXED**

Postby RMRM » August 18th, 2015, 8:32 am

Nice hint :thumbup:

Return to “Repair Logs”

Who is online

Users browsing this forum: No registered users