Search found 4 matches

by McJanDK
Mon Sep 04, 2017 9:44 am
Forum: Troubleshooting/problems/manuals/schematics
Topic: Official Schematics and Manuals Thread (Registered Users)
Replies: 172
Views: 126506

Re: Official Schematics and Manuals Thread (Registered Users)

Any one ? Bias for the ET250S ? Its my friends amp I'm repairing for him, and he miss it :-)
by McJanDK
Fri Sep 01, 2017 3:52 am
Forum: Troubleshooting/problems/manuals/schematics
Topic: Official Schematics and Manuals Thread (Registered Users)
Replies: 172
Views: 126506

Re: Official Schematics and Manuals Thread (Registered Users)

In addition, Is it normal that the C33-C40 "all 10000uF 80V" boils up in the top in the ET250S ?????. I wondered that there are used capasitors from 1995 which today are 22 years old and after the book is not good anymore .....
by McJanDK
Fri Sep 01, 2017 3:03 am
Forum: Troubleshooting/problems/manuals/schematics
Topic: Official Schematics and Manuals Thread (Registered Users)
Replies: 172
Views: 126506

Re: Official Schematics and Manuals Thread (Registered Users)

Hi thanks - my name is Jan 😊

I need the bias value because after repairing of a broken broken power amp transistor on the right side. After repair I must readjust the bias. I like to know the value mV/mA and where the measure points are

Best regards

Jan Christensen
Repair Technician
Denmark
by McJanDK
Thu Aug 31, 2017 6:37 pm
Forum: Troubleshooting/problems/manuals/schematics
Topic: Official Schematics and Manuals Thread (Registered Users)
Replies: 172
Views: 126506

Re: Official Schematics and Manuals Thread (Registered Users)

Hi every body :-)

The ET250S bias adjustment - Does some one know the data for the settings/value ?