Problems with assembly

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veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Problems with assembly

Post by veekoo »

Hi. I am just assembling my build. I managed to solder almost everything. Power circuit is working. Clock circut is working. Blinkenlights don't work.
I had trouble with my soldering station and had to use reserve simple soldering pen, but this probably don't heat up to 370c so the quality of work is questionable.
Last edited by veekoo on 13 Jun 2021, 06:13, edited 1 time in total.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

Already spotted couple short circuits and couople more need more tin at two places
Last edited by veekoo on 13 Jun 2021, 06:14, edited 1 time in total.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

Some action seen at blinkenlights, but then it stopped. I’ve been checking solderings and washed the board.

ROM module has one pin that is shorter, but might make contact.
Last edited by veekoo on 13 Jun 2021, 06:14, edited 1 time in total.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

ROM passed diode and voltage checks
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

If I apply pressure to ICs in right top corner lights start doing something random. There must be cold solderings there.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

Resoldered everything.
Last edited by veekoo on 13 Jun 2021, 06:17, edited 1 time in total.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

Now it seems to stable all lights on. One led must be wrong way, so it stops program.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

LED output seems quiet.
Could actual IC be broken? Led was wrong way.
Last edited by veekoo on 13 Jun 2021, 06:16, edited 1 time in total.
veekoo
Posts: 9
Joined: 07 Jun 2021, 07:07

Re: Problems with assembly

Post by veekoo »

Does the board have to operating spefic way to measure the values according to troubleshoot-excel?
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