Power Macintosh 5260 Flyback

[lem150]

Hi, I have a 5260 that is having some issues. I have done a full recap and the logic board works fine (I tested it in a 6500). It turns on (most of the time) but there are some click sounds and a loud sound from the CRT startup. I have a video to see. Is this the flyback going? Does anyone know if I can get a replacement somehow?

 

[Byrd]

From startup, that sounds OK - slight crackle as the CRT turns on and then the "donk" being the degauss function.

A failing flyback would be more evident over using it for a while. If you hear the CRT snap and crackle under normal use (or it might turn off for a moment), have a look at the flyback in a dark room and see if there is any arcing from the unit.

 

[lem150]

So it is turning on regularly now, but it wasn’t yesterday. I did reflow the psu caps. Could there be something wrong with the psu board?

 

[Byrd]

Give it the board a tap while on - turning on and off would be suggestive of dry solder joints. Yes, PSU caps ideally need to be replaced for long term use/if you love it.