Hello All! Hope everyone’s well. Okay so my ETG1000 is still out of service, I’m still waiting on parts to repair it. Now today randomly my ETG500DR has decided to throw a fit. I’ll attach 2 videos. The fans pulse, and this is the situation of the power output. Really really weird. If you could give me some protentials before i take the lid off? When you turn the TX off the fans ramp to full for a good 2 seconds while the caps discharge. What do you think. Brian probably has the most experience with these older style elenos TX’s!

Have a look at these…

First thing to check is the voltage rails to see if the voltages are stable. Could just be some crusty electrolytic caps causing instability and the fans slowing when the voltage drops.

Looks like classic psu failure.

Hmm right. I’ll send someone out to have a look as i’m not at the station right now! We’re still Off-Air

EFR wrote: ↑Fri Jul 04, 2025 5:53 am Looks like classic psu failure.

Yes......... the PSU would be the first thing I would look into

What happens when you turn the RF OFF - this puts the PS at +/- 30V and the fans are normally just ticking over

Brian, Was waiting for you to reply, We both have a etg500&etg1000! you’ve probably got the most experience. I’ll get someone to do some probing soon. And update. Thanks all!