RL-1 Troubleshooting Page
Applies to TS-530S and
What does RL-1 do?
RL-1 is a 4PDT relay that switches final bias, RIT, XIT, exciter gain, and affects both transmit and receive when the contacts begin acting up.
What are the symptoms if RL-1 starts to fail?
Most of the obvious problems concern intermittent or unstable ALC and/or poor recovery of receive sensitivity after transmitting. It can impact several areas, but is most noticeable when switching from receive to transmit, and then back again.
How can I test for problems with RL-1?
The easiest way is to open the case, locate the relay, and tap it with a tool such as the handle of a small screwdriver while the problem is occurring. If the contacts are good, nothing will change. If the contacts are bad, it will be rather evident with each tap.
Can RL-1 be repaired?
Sometimes. Disconnect power, let the rig sit for a while, and then discharge the HV capacitors. Carefully open the relay case by removing the plastic cover. Be very careful to avoid impacting the contacts as you remove the cover. These are small, delicate relays, and are easily damaged. Once the cover is off, spray the contacts with cleaner/lube and work the armature with your fingertip or a small tool. Do this cleaning routine several times. Unlike the antenna relay, they are too small and delicate to burnish, this is about the most you can attempt. This may or may not provide a lasting repair - I save perhaps one out of five relays this way. A new relay can be purchased HERE.
Remove the top and bottom cover. RL-1 is located on
the bottom of the radio, on the AF board as shown.
Remove the top cover. RL-1 is located on the IF board, at the end opposite of the SSB and CW filters.
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