UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Tektronix 2211 scope short-circuited

MrBungle · 12th Apr 2019, 9:52 am

It's possible. Check all the power rails for shorts to ground as well. They are all accessible by large staple-like jumpers just outside the power supply enclosure (you will have to remove the digital board). It's possible there are tantalum or Philips capacitors on it somewhere which have gone short. The power supply will fail to start and pop the fuse then.

The last 2225 I did had shorted Philips caps in it.

edit: actually I'd probably pull the digital board out and see if it works or not then go from there.

12th Apr 2019, 9:52 am	#12
MrBungle Dekatron Join Date: Jun 2016 Location: London, UK. Posts: 3,687	Re: Tektronix 2211 scope short-circuited It's possible. Check all the power rails for shorts to ground as well. They are all accessible by large staple-like jumpers just outside the power supply enclosure (you will have to remove the digital board). It's possible there are tantalum or Philips capacitors on it somewhere which have gone short. The power supply will fail to start and pop the fuse then. The last 2225 I did had shorted Philips caps in it. edit: actually I'd probably pull the digital board out and see if it works or not then go from there.