Translate this page:

Hello. This is my first post on the forum. I have a defective meter Tektronix DC502 Frequency Option1. SM fits the DC501. The damage is that it always displays "1111111". Generator 5MHz is operational. 7490 dividers as well. Unless the system is damaged 74LS112 U165. On its output there does not appear, regardless of whether the generator is working or push reset. Can anyone confirm this? Sorry for my English, I use google translate.

I have a problem with the Tektronix 7633rd Readout is not working. Displays only the spot, (no time base on the screen), from time to time, jump to the next position where it should be readout. After adjustment knob charcter scan, there's a readout, but the characters were, or blurred, or not drawn to the end - in pieces, imposed on themselves. The readout is off everything works. For all kinds of advice I would be very grateful.

Sziasztok !! Segítségeteket szeretném kérni egy TEKTRONIX 2335, 2336, 2337 tip. scopok javításához. Szükségem lenne a szervízkönyvére . Köszönettel Árpi

Sziasztok Egy gyalázatos állapotban lévő TEKTRONIX 454 szkópot hoztam helyre de ma derült ki hogy 3db 1N3758-as tunnel dióda zárlatos a 4-ből a szinkron fokozatokban. Van valami ötletetek a problémára? Üdv Kiss