--- a/content/TeK2445.rst Thu Nov 05 22:14:33 2020 +0100 +++ b/content/TeK2445.rst Thu Nov 05 22:15:16 2020 +0100 @@ -15,15 +15,15 @@ Here is the beast: -.. image:: {static}images/tek2445/tek2445.jpg +.. image:: {static}/images/tek2445/tek2445.jpg :alt: My old Tektronics 2445 scope - + And some pictures of its womb: -.. image:: {static}images/tek2445/tek2445_A1.jpg +.. image:: {static}/images/tek2445/tek2445_A1.jpg :alt: The main analog board. - -.. image:: {static}images/tek2445/tek2445_top.jpg + +.. image:: {static}/images/tek2445/tek2445_top.jpg :alt: Top view of the scope. The PSU consists in two PCBs coupled with long jumpers. It's not very @@ -33,27 +33,25 @@ Whatever, its problem was a classic failure of several X2 and Y capacitors on the regulator board (A2): -.. image:: {static}images/tek2445/PSU_A2.png +.. image:: {static}/images/tek2445/PSU_A2.png :alt: The regulator board os the PSU. -.. image:: {static}images/tek2445/board_a2.jpg +.. image:: {static}/images/tek2445/board_a2.jpg :alt: The regulator board os the PSU. - -.. image:: {static}images/tek2445/board_a2_C1018.jpg + +.. image:: {static}/images/tek2445/board_a2_C1018.jpg :alt: Dead C1018 capacitor. - + and the inverter board (A3), mainly C1020, C1051 and C1052: -.. image:: {static}images/tek2445/PSU_A3.png +.. image:: {static}/images/tek2445/PSU_A3.png :alt: The inverter board of the PSU. - + For now, I've replaced them with parts from old switching power supplies (from old Dell and IBM computers), but I'd rather replace them with brand new components. I also still have some small display instabilities, which I need to investigate a bit more. I'll probably replace most of the electrolytics caps on the PSU so that I won't have to repair again any time soon (famous last words). - -