I just restored an sc504 and about 20% of the tantalum caps were leaky. I am now restoring another one and almost all the orange 22uf tantalum caps are bad. Nice video!
What a great job you have done! And what an interesting problem with leakage on the board, happy to see you were able to sort it out. Thank you for sharing with us. Regards, David
I enjoyed this video. It will guide me in my 500 series collection. Only have a few cabinets with some power supplies and DVM’s. Decided to wait until these are all working before moving to an oscilloscope.
I noticed that the calibration switch on the front panel of your HP 3478A is in the cal position - that is why the LSD on the display is a "C". Regards, David
I just restored an sc504 and about 20% of the tantalum caps were leaky. I am now restoring another one and almost all the orange 22uf tantalum caps are bad. Nice video!
Excellent Job! I am at a loss as well as to why that voltage leakage was cleared up simply by cleaning the area. Great diagnostics!
Thank you very much for the kind comment.
What a great job you have done! And what an interesting problem with leakage on the board, happy to see you were able to sort it out. Thank you for sharing with us. Regards, David
Thanks David, it seems indeed that this TM series pcbs are developing leakages. A bit difficult to trace it out but glad that I have found it.
I enjoyed this video. It will guide me in my 500 series collection. Only have a few cabinets with some power supplies and DVM’s. Decided to wait until these are all working before moving to an oscilloscope.
I noticed that the calibration switch on the front panel of your HP 3478A is in the cal position - that is why the LSD on the display is a "C". Regards, David
Yes! You are absolutely right, thanks for letting me noted that.
Nice work on a nice scope. Thanks for the video!
Very thorough. Excellent work.
@@robbo6460 thank you very much!!
I’m now officially addicted to your channel. Your work is super and your troubleshooting process is fantastic. Thank you and keep them coming.
@@robbo6460 thanks again, it’s really appreciated.
Well done. Great job . Look forward to the next video.
Many thanks!