ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
This thread actually starts here: http://archivedforum2.beoworld.org/forums/p/189/34354.aspx#34354
//Bo.A long list...
I ordered a capacitor & lamp kit from Dillen.
Arrived with good documentation.
Started with the three electrolytic caps. Originally they where 3300uF, these are 4700uF but that's only better. Since these where of snap in type i kept the original legs and soldered them together.
I glued them to the pcb whit hot-melt.
When doing a job like this on a working unit it's a good advice not to change too many thing at a time. I try to do thing in group not to many at the same time. If you change a lot and i doesn't work in the end, fault finding becomes quite difficult. A strategy the came to be proven wise.
Next a changed trimmers for 32V & Idle current.
In place.
Adjusting 32V
Adjusting idle current. Should be 25mA and 10mV over the 0,39ohm resistor.
More to come..
Continued..
Resistor have to be unsoldered for measuring the idle current.
Now the orange ones.
Old ones and replacement.
The electrolytics changed.
Left the trimmers for the radio, 2R9 and 2R92 unchanged since I don't have the equipment for adjusting them..
Remove the wheel to unsolder the tantalums behind!F
I didn't! It gave me some extra work!
I got the polarity wrong on a tantalum's which caused noises and cracks in one channel.
https://www.youtube.com/watch?v=75SdsBLq8
Changing the polarity corrected the problem
Next step will be assembly...
Assembled & testing
Lamps working
Hooked up to Beovox Penta, sound terriffic!
Thanks To Dillen for kit and good advice.
Next will be finding suitable speakers.