Original Classic crashes on playing the sound

[CharlieFrown]

Hi, 

Luckily this one never had a leaky battery. Boots just fine, but never heard any sound from it. When I click play sound in System 7 Control Panel it crashes. Cleaned the board with IPA, especially around sound chip, put headphone jack back and forth. No progress. I am planning to recap the board, but I guess there's something else going wrong?  

 

[desiv]

Have you booted from a floppy or to the ROM (Command-Option-X-O on boot) and tried the sound?  Just to make sure it's not a software glitch?

Otherwise, cleaning/recap seems to be a good step...

 

[CharlieFrown]

ok thanks for reply. Need to check this while booted from Floppy/ROM. 

 

[CharlieFrown]

here's update: recapping the logic board worked magic and eliminated all these problems:

- no sound

- sudden slowdowns, when computer would stall and wait before completing tasks

- hard drive inaccessibility - quite often the hdd wasn't present at booting