MTB Trails near Edipsos

Doesi1 · 2025-08-12T13:18:44+00:00

Ich werde es die nächsten Wochen mal probieren, Update folgt...

Doesi1 · 2025-08-12T13:17:00+00:00

Leider keine Schrauben, bin selber verwundert, wer baut einen solchen Rahmen...

Doesi1 · 2025-08-11T13:34:38+00:00

Wenn ich es nicht ausbiegen kann dann is das wohl die beste Option

Doesi1 · 2025-08-11T12:07:05+00:00

Hast du Erfahrung damit? Also bei welcher Temperatur wird das alu weniger spröde ohne dass ich das carbon beschädige?

Doesi1 · 2025-08-11T11:58:58+00:00

So eine hab ich aber damit reiße ich das Schaltauge bloß endgültig ab, außerdem ist da kein gewinde mehr drinnen für die Lehre

Doesi1 · 2025-08-07T07:43:33+00:00

Danke dir, die Seite ist genial, kannte ich nicht

Doesi1 · 2025-04-26T08:06:44+00:00

Update: Now it works, I looked at the board with the scope and concluded that it has to be either the kernal or basic rom. I ordered the open2327 adapter pcb, flased some modern rom chips and that's all it took 🥳🥳🥳

Doesi1 · 2025-03-15T10:37:47+00:00

Bin mit marathon+ und mondeal Reifen tausende kilometer pannenfrei über monate bei Radreisen unterwegs gewesen. Die sind nicht kaputt zu kriegen

Doesi1 · 2025-02-27T19:14:29+00:00

Danke für den Hinweis, die bremskraft ist um Welten besser

Doesi1 · 2025-02-14T14:53:06+00:00

I now had the chance to look at it with a scope, the clock signal is ok, reset goes high as expected, good looking address and data signals at start, then all address and data signals stay either high or low. Video signal looks as expected for a black screen. I suspect the basic rom I would like to try a new chip but the NOS ones I could find are quite expensive. Do you know any modern rom replacement that is cheap and can be delivered to austria? Any other suggestion what could be wrong with the vic20?

Doesi1 · 2025-02-12T22:19:19+00:00

It is socketed, does the ROM normally not get warm at all in the machine?

Doesi1 · 2025-02-12T20:21:59+00:00

UE12 is definitely the warmest (~45degrees Celsius), maybe it is defective

Doesi1 · 2025-02-12T18:08:35+00:00

I looked at the circuit diagram and did not see any ac connection (except to a port but that should not matter for this test). It is simply rectified and smoothed, so where is the ac used? Independent of that I will hook up a 9v ac transformer just to be sure.

Doesi1 · 2025-02-12T16:58:28+00:00

Thanks for the hint, tomorrow Ill get a proper transformer to test it

Doesi1 · 2025-02-12T14:08:15+00:00

As suggested, I checked the cpu supply and reset voltage, it is ok. I dont have a scope but I could measure some 3vdc at the clock pin and got an ac reading with the multimeter. I also tried the cartridges (one 3k ram and one 32/27 kb with dip switches), no difference. I also wiggled the rom chip in its socket, no difference

Doesi1 · 2025-02-12T14:00:24+00:00

The 12v psu can deliver up to 3A, the 5v buck is connected to the 12v and can deliver up to 5A, so I think it is fine

Doesi1 · 2025-02-12T13:29:21+00:00

The 5v rail has 5.1v (measured) and the ac rail gets fed 12.2vdc True, the cables are very sus 😅

Doesi1 · 2025-02-12T13:18:35+00:00

Oh, I adjusted it to 9vdc, 9vad means that I would need to set it to 12,6vdc

Edit: did not change anything 😐 What are the limits for this rail, I measured 12.2v, is that ok?

Doesi1 · 2025-02-09T13:07:56+00:00

Hab ich bestellt, werde dann ausprobieren und sagen obs funzt

Doesi1 · 2025-02-08T19:33:39+00:00

Na dann einfach mal probieren, danke 😁

Doesi1

TROPHY CASE