Akai GX-630D Smoke?

[Ifa]

Hi
I have had this open reel since early mornings, last 20 years it has not been used. I've fired the deck up and played for about one hour with a great smile, good memories from the past did compensate for the "non perfect sound" in these digital perfect times. I was suddenly dragged back to reality of a burnt smell and light grey smoke emitting the deck, and jumped to the mains socket and ripped it out from the wall.

I have downloaded the manual, but I am not quite sure where to start looking for the source of the smoke. It did play all the time perfect, so I hope it still is ok. I have read in here that the CR1 to x noise suppressors might be burnt? Or any of the rectifiers might be blown. It did not smell any distinct like a electrolytic cap would do (at least in my imagination they smell)

I have opened the reel and had a good look, but I could not see any signs of burnt components, so I wonder if any guru here can give me a lead? That would be very much appreciated.

 

[CheeseofBorg]

Check the power supply first, you might find an obvious offender (such as filter caps split in half).

 

[dhnash]

Check the power supply first, you might find an obvious offender (such as filter caps split in half).

Other components that have a history of being problematic are the R-C surge suppression networks labeled CRx where x is a number. These can be found on the GX-630D/DB Schematic Diagram No. 5-3 in the service manual.

 

[Ifa]

Other components that have a history of being problematic are the R-C surge suppression networks labeled CRx where x is a number. These can be found on the GX-630D/DB Schematic Diagram No. 5-3 in the service manual.

Thanks a lot, I shall have a second look at these, and guess it's obvious if they are blown, either the resistors or the caps, tnx

 

[dhnash]

These will often have visible damage (cracks or burned areas) and/or a characteristic burned smell. If you need to replace any, they are available from many electronic component suppliers. Attached is a manufacturers specification sheet I obtained from the Newark Electronics website for similar components. The XE1201 type shown in this document has specifications that seem to match those of the ones used in the GX-630D.

 

[Ifa]

Check the power supply first, you might find an obvious offender (such as filter caps split in half).

I did not see any at the first look, but I have now a few locations to study closer. It is a nice reel to reel, and it would be a disaster if such a nice item are blown. For sure it brings the memories back for me even if the high end hifi is not fully there.

 

[Ifa]

These will often have visible damage (cracks or burned areas) and/or a characteristic burned smell. If you need to replace any, they are available from many electronic component suppliers. Attached is a manufacturers specification sheet I obtained from the Newark Electronics website for similar components. The XE1201 type shown in this document has specifications that seem to match those of the ones used in the GX-630D.

Tnx a lot for this, I am currently offshore, and will have a good look when I am back home, and thanks for the link

 

[CheeseofBorg]

I did not see any at the first look, but I have now a few locations to study closer. It is a nice reel to reel, and it would be a disaster if such a nice item are blown. For sure it brings the memories back for me even if the high end hifi is not fully there.

Nearly all discrete components have modern replacements available, I would recommend Digikey or Mouser as a source of replacement parts.

 

[gtv2000]

The Akais of mine of that vintage have needed motor run caps, but that does sound like your issue. But I'd check them.

 

[rod69ss]

Hi there, I know this is a couple of years ago, mine did the same. Did you locate the problem? Thanks,