547/Repairs: Difference between revisions

#Isolate the problem to a specific section first, for example Power supply, HV, Vertical, Horizontal, Trigger.

#There are DC voltages marked in every section of the schematic. Set the oscilloscope to the specific settings as mentioned in the service manual and verify all  DC bias voltages at the schematic section in question are matching  service manual.  Once again remember to keep the scope in the specific settings as specified in the service manual. The failing section of the schematic can be easily spotted by a missing or incorrect DC bias value, mostly due to shorted or open components.  

# There are AC waveforms shown in the schematic for every block of the schematic. Verify and confirm the same with another scope to isolate the failing component/section.  

# Service manual explains the schematic in detail, refer it for a detailed understanding of the section you are troubleshooting.

# You can inject external H-signal to isolate sweep generator and H- AMP section. Set the scope to external H input and apply external H signal to verify the H-Amp is working. This will help you narrow down the problem between H-Amp and Sweep/Time Base.