Hi,
I just got my new Signal Analyser, a nice HP 3562A ... a big beast.
I bought it as broken, the seller described as : instrument with shorted psu.
The first issue was to find a complet service manual with the psu section.
All 3562a pdf we can download and specialy all from HP/Agilent are not complet.
By chance the 3563A shares some component with the 3562A adn I found all necessary information about the psu in the service manual of the 3562A.
The service manual PSU section:
http://alexkachler.free.fr/workshop/3562a/doc/3562a_psu.pdfI started my investigation the last week and found out that the PRI (CR6 led)debug led was on.
Based on the service manual the Primary is faulty
I started with the Primary Fault Test but I had o stop on point 9 because I have currently no VARIAC.
But until this point every thin was correct:
- Q400 and Q401 : ok.
- R409, R410, R403 and R404 : ok.
- Waveform #4 : ok
I have checked some other waveform I found inthe manual:
- U2 : Wavforme #1 :ok
- Driver and PWM Clock : Wavforme #2 :ok
- Sync : Wavforme #3 :ok
- Test Switching Waveform : Wavforme #4 :ok
- power FET Gates : Waveform #1 :
strange results - Transformer T2 : Waveform #6 :
FAILEDIs the T2 transformer broken or a side component?
Do you have an idea how I can continue? or what can be broken?
Thanks for your help
Regards,
Alex