Service manuals, schematics, eproms for electrical technicians


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Relevant METER forum topics:
Tektronix 7633 readout repair
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.
Tektronix DC502 option 1
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.
Tektronix 463 Tápegység hiba
Egy Tek 463-as amit javítani szeretnék,de valami nem stimmel,a rajz és a valódi kapcsolás között.Talán a gyártás során változtattak, vagy előttem valaki. A  Q1516 ami egy tranzisztor de  a gyári gépkönyvben ez Q1514,és tirisztor és ilyen nincs.
Van itt egy 3kOhm-os ellenállás ami nincs rajzon. A szabályozatlan 120 Volt helyett közel 160 Volt van,a többi hiányzik.
Ha valaki gyakorlottabb és tudna segíteni,Köszönöm.
Tektronix 434 rajzot keresek
Tisztelt Tanyalakók ! Hozzájutottam egy Tektronix 434-es szkóphoz aminek a táprészét valaki már szétszedte, a többi része úgy tűnik sértetlen. Ha esetleg valakinek lenne kapcsolási rajza, akár a teljes készülékről, akár csak a táp részről segítsen. Előre is köszönöm. Üdvözlettel: Comman.
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