GanjaTron
Experienced Member
- Joined
- Jan 11, 2007
- Messages
- 201
Hi folks,
got my hands on a TekTronix 4052 (with one of those weird DVST screens). It powers up, but nothing else happens other than the screen glowing all green, the "power" and "busy" lamps lighting up, and the "I/O" lamp flickering faintly. After a few minutes "I/O" and the screen go dark, before coming back on again after another pause. The cycle repeats with two or three clicks from the speaker. There's absolutely no reponse to any keypresses.
I removed the motherboard and reseated all socketed chips, but to no avail. Haven't done any checks with an oscilloscope yet. Although I have a pile of documentation for it, I don't have any schematics at hand.
There's little info on the web for this system, expect on Jon Stanley's website (http://www.electronixandmore.com/articles/teksystem.html). Jon had to replace the ROMs, of which he had spares. Alas, I don't have the luxury of spares, and without a known good ROM dump I have no way of checking the validity of my ROMs.
Anyone here have any hints or could supply me with a set of schematics?
Thanks,
--Roland
got my hands on a TekTronix 4052 (with one of those weird DVST screens). It powers up, but nothing else happens other than the screen glowing all green, the "power" and "busy" lamps lighting up, and the "I/O" lamp flickering faintly. After a few minutes "I/O" and the screen go dark, before coming back on again after another pause. The cycle repeats with two or three clicks from the speaker. There's absolutely no reponse to any keypresses.
I removed the motherboard and reseated all socketed chips, but to no avail. Haven't done any checks with an oscilloscope yet. Although I have a pile of documentation for it, I don't have any schematics at hand.
There's little info on the web for this system, expect on Jon Stanley's website (http://www.electronixandmore.com/articles/teksystem.html). Jon had to replace the ROMs, of which he had spares. Alas, I don't have the luxury of spares, and without a known good ROM dump I have no way of checking the validity of my ROMs.
Anyone here have any hints or could supply me with a set of schematics?
Thanks,
--Roland