NSM Laser Board (CDM4/36) Looks Like High Heat

bigbird0000
New Member

Posts: 3

NSM Laser Board (CDM4/36) Looks Like High Heat Mar 18, 2019 17:03:14 GMT

Quote

I'm still working on my NSM Firebird (ES-IV).

I'm trying to find out why I have no audio (the CD spins up, and tracks)

I removed the CD Unit, and noticed the heat marks on the back of the board,

it is where the TCA0372DP chip is.

What would cause this chip to overheat?

I'm not familiar with op amps etc, is there an easy way to test it? Could this be

causing lack of audio?

Board number 312211850730.

Thanks

Attachments:

Ron Rich Global Moderator Posts: 8,794	NSM Laser Board (CDM4/36) Looks Like High Heat Mar 18, 2019 18:58:57 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Ron Rich on Mar 18, 2019 18:58:57 GMT Alan, Anything on that board could, be bad-- That area is always blackened on those boards--but I would guess the laser is shot-- most died long ago ! Ron Rich
	Ron Rich (board monitor) Millbrae (about 12 mi. South, of San Francisco),CA, USA

bigbird0000 New Member Posts: 3	NSM Laser Board (CDM4/36) Looks Like High Heat Mar 18, 2019 22:47:50 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by bigbird0000 on Mar 18, 2019 22:47:50 GMT Thanks Ron, Will check laser as well as other components....