Dead oric 1

If you want to ask questions about how the machine works, peculiar details, the differences between models, here it is !
How to program the oric hardware (VIA, FDC, ...) is also welcome.
Traindriver69
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Re: Dead oric 1

Post by Traindriver69 » Thu Feb 28, 2019 4:16 pm

settings on mine has not got 2000
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IMG_20190228_151215[1].jpg

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iss
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Re: Dead oric 1

Post by iss » Thu Feb 28, 2019 4:24 pm

Stop! 2m is too small and can damage the multi-meter!
You can use 20m/10A - but put the probe in the other hole as on picture (where is a label 10A).
amper1.jpg
amper1.jpg (37.09 KiB) Viewed 1456 times

Traindriver69
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Re: Dead oric 1

Post by Traindriver69 » Thu Feb 28, 2019 4:31 pm

I have tried that as well with two different multimeters and get no reading

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Re: Dead oric 1

Post by Traindriver69 » Thu Feb 28, 2019 4:45 pm

sorted it getting a reading of 0.53 A

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iss
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Re: Dead oric 1

Post by iss » Thu Feb 28, 2019 4:51 pm

OK, you can try another measuring - it's not scientific, but in practice is used sometimes:
Remove the power adapter, set the multi-meter to measure resistance (2k) and measure again at IC10 (or IC11) - i.e. black probe to black arrow and red probe to red arrow - warning again do this with UNPOWERED Oric.

Speaking from memory you should read ~200-250 Ohms which is normal for working board.
If you get lower value than 100 Ohms - this indicates fried chip !

EDIT: ~0.53A is good but try to measure the resistance too.

Traindriver69
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Re: Dead oric 1

Post by Traindriver69 » Thu Feb 28, 2019 5:07 pm

getting ~264 on both

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Chema
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Re: Dead oric 1

Post by Chema » Thu Feb 28, 2019 7:36 pm

I guess this might not be funny for the owner, or maybe yes. But I can tell you that I am following this with a lot of interest, as a puzzle or some kind of mystery TV series :)

Keep on! I am sure you'll get the Oric back to working condition!

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ibisum
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Re: Dead oric 1

Post by ibisum » Fri Mar 01, 2019 12:16 pm

I can see a "how to debug your non-working Oric" game coming out of this, a la Oslo ..

Traindriver69
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Re: Dead oric 1

Post by Traindriver69 » Fri Mar 01, 2019 6:22 pm

Hi
Anyone any ideas of what to try next.
Many thanks

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iss
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Re: Dead oric 1

Post by iss » Fri Mar 01, 2019 6:42 pm

From your first post:
... so plugged my power supply into it and nothing
What means 'nothing' here? If you attach a monitor, is anything displayed on it?

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Re: Dead oric 1

Post by Traindriver69 » Fri Mar 01, 2019 7:03 pm

I have tried it through the rf cable to a tv and nothing and keyboard no sound.

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iss
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Re: Dead oric 1

Post by iss » Fri Mar 01, 2019 7:06 pm

Traindriver69 wrote:
Fri Mar 01, 2019 7:03 pm
I have tried it through the rf cable to a tv and nothing and keyboard no sound.
So, nothing means just black TV screen or there are bars or something? Can you try with SCART?

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Re: Dead oric 1

Post by Traindriver69 » Fri Mar 01, 2019 7:27 pm

I have a working oric 1 that tunes in fine this one you get nothing at all does not even try to tune in.

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Re: Dead oric 1

Post by iss » Fri Mar 01, 2019 7:40 pm

Can you take a picture from this side?
Screenshot_20190301_203607.png

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Re: Dead oric 1

Post by Traindriver69 » Fri Mar 01, 2019 7:54 pm

Here you go
IMG_20190301_185258.jpg

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