If you are experiencing trouble with your DG535 you can either send your instrument back to SRS for service, or you can try and fix the problem yourself. If you wish to send the instrument back now click here.
If you wish to try and fix the problem yourself, the following troubleshooting guide may help you.
DG535 Troubleshooting Guide
Symptom 1 — There is no signal at one of the channel outputs
Most likely, the output stage transistor is damaged and needs replacing. If your instrument is old, it may have an MRF965 transistor at the output. If it is new, it will have a small assembly in a socket instead of the MRF965. In either case, you will need to replace either the MRF965 or the assembly with a new assembly (part number 534 ASSY).
You can order the 534 ASSY assembly by clicking here.
If you are still having trouble your DG535, it will need to come back to SRS for service. Click here to get an RMA number.