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547/Repairs: Difference between revisions
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They can also fail. Tunnel diodes are sensitive, be careful while soldering them and use proper heat sinking to avoid damage to the Tunnel diodes. | They can also fail. Tunnel diodes are sensitive, be careful while soldering them and use proper heat sinking to avoid damage to the Tunnel diodes. | ||
A failed tunnel in the trigger will result in sweep free running in auto mode and unable to lock. Normal mode sweep will not trigger. | A failed tunnel in the trigger will result in sweep free running in auto mode and unable to lock. Normal mode sweep will not trigger. | ||
== HV Transformer == | == HV Transformer == | ||
Refer to [[547]] Main page for details. | Refer to [[547]] Main page for details. | ||
==General Troubleshooting== | ==General Troubleshooting== | ||
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5. 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. | 5. 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. | ||
[[Category:Instrument repair reports]] | |||