Seems like this could be the old "Is it plugged in?," from IT rearing it's ugly head in your power supply repair video! Maybe we need a checklist that starts with 1. Is it plugged in? 2. Is the voltage selector set to your local standard? 3. Is it turned on? ... I'd have to say that this is certainly going to be on my list of things to check right off the bat from now on. You're right on that you wouldn't think that to be the problem but then this just goes to show we can't assume anything when getting 2nd hand equipment. Thanks for putting your first video up, it was helpful to me and I do appreciate the time you put into it. Looking forward to more as I enjoy watching repair videos and seeing other people's process for troubleshooting and repair.
I've commented on a few other videos but I went to your about section and we are pretty much best friends now. Lol i have 5 metal defectors, favorite being an old White's eagle SL2 and newest being an equinox 800. Have a mini mill that I enjoy learning on and love attempting to fix electronic goodies. Awesome channel, can't wait to binge watch the rest of the videos.
I had an Eagle II SL as well. Sold it some time ago. I still have lots of detectors but I no longer use them. I guess I kind of lost interest after my divorce. I'm more focused on electronics repair these days. I still occasionally use the CNC mill, mostly for work projects. I hope you enjoy the videos!
Nice one! Spotted a Rifa X2 capacitor next to the voltage selection switch, worth having a close look for any signs of cracking in the case as these can fail with magic smoke.
Nice supply. Happened to me once when I purchased a really top end voltage / current source. It was sold on ebay as faulty and I found that it just blew fuses. After hours of fault finding I found that it was a 120V unit but It did not have a voltage selection switch. I assume someone got it from the US and decided to sell it on without mentioning that fact. I did get it working but had to wind an auto transformer for it and find space inside to squeeze it in. Worked fine ever since.
I use an isolation transformer and a variac when troubleshooting power supply problems. If the power supply is blowing fuses you can bring up the voltage slowly and do primary side debugging at low voltage. The isolation transformer helps for safety.
Nice job. Sometimes it is easy. I frequently neglect to check the input voltage selector. I have been trying to always look before my initial turn on, but in this case you would not have seen it until you opened it up as you did.
I also have a ds1102 that I'd like to fix. It clicks when it turns on but usually nothing shows on the screen, however sometimes the green buttons light up just for a second but nothing ever shows on the screen. Any suggestions on where to start?
My best guess would be to check power rails. Look for 5V, 3.3V, maybe a 1.8V or 1.5V rail. The common ones. Another possibility would be corrupt firmware. Mine has never given me any trouble but I no longer use it. It was replaced with a Siglent SDS-1202X-E. The Rigol just sits on a shelf although it is a decent scope.
Seems like this could be the old "Is it plugged in?," from IT rearing it's ugly head in your power supply repair video! Maybe we need a checklist that starts with 1. Is it plugged in? 2. Is the voltage selector set to your local standard? 3. Is it turned on? ... I'd have to say that this is certainly going to be on my list of things to check right off the bat from now on. You're right on that you wouldn't think that to be the problem but then this just goes to show we can't assume anything when getting 2nd hand equipment. Thanks for putting your first video up, it was helpful to me and I do appreciate the time you put into it. Looking forward to more as I enjoy watching repair videos and seeing other people's process for troubleshooting and repair.
I've commented on a few other videos but I went to your about section and we are pretty much best friends now. Lol i have 5 metal defectors, favorite being an old White's eagle SL2 and newest being an equinox 800. Have a mini mill that I enjoy learning on and love attempting to fix electronic goodies.
Awesome channel, can't wait to binge watch the rest of the videos.
I had an Eagle II SL as well. Sold it some time ago. I still have lots of detectors but I no longer use them. I guess I kind of lost interest after my divorce. I'm more focused on electronics repair these days. I still occasionally use the CNC mill, mostly for work projects. I hope you enjoy the videos!
Nice one! Spotted a Rifa X2 capacitor next to the voltage selection switch, worth having a close look for any signs of cracking in the case as these can fail with magic smoke.
At least we got a lesson on troubleshooting. Thanks.
Nice supply. Happened to me once when I purchased a really top end voltage / current source. It was sold on ebay as faulty and I found that it just blew fuses. After hours of fault finding I found that it was a 120V unit but It did not have a voltage selection switch. I assume someone got it from the US and decided to sell it on without mentioning that fact. I did get it working but had to wind an auto transformer for it and find space inside to squeeze it in. Worked fine ever since.
I use an isolation transformer and a variac when troubleshooting power supply problems. If the power supply is blowing fuses
you can bring up the voltage slowly and do primary side debugging at low voltage. The isolation transformer helps for safety.
Nice job. Sometimes it is easy. I frequently neglect to check the input voltage selector. I have been trying to always look before my initial turn on, but in this case you would not have seen it until you opened it up as you did.
Good find. Got to be lucky sometimes. Wonder what it cost originally.
Great job, enjoyed watching. Thank you sir.
HI, check if there is a 1 A fuse inside. On 115 V it needs a 2 A fuse as marked on the label.
Good point.
I also have a ds1102 that I'd like to fix. It clicks when it turns on but usually nothing shows on the screen, however sometimes the green buttons light up just for a second but nothing ever shows on the screen.
Any suggestions on where to start?
My best guess would be to check power rails. Look for 5V, 3.3V, maybe a 1.8V or 1.5V rail. The common ones. Another possibility would be corrupt firmware. Mine has never given me any trouble but I no longer use it. It was replaced with a Siglent SDS-1202X-E. The Rigol just sits on a shelf although it is a decent scope.