DR90-A01 repair

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DR90-A01 repair

Postby niklas-k » 19 Feb 2021, 20:28

I'am trying to repairing a controller DR90-A01 and one issues error code or what I think is an error code. Can not see in the manual what the error code is?
Are there any special codes that anyone here recognizes?
The direct thing I know is wrong is the 15 volt rail does not provide output voltage. It may also explain why it is not possible to connect to the wizard program.
Sends with a video showing the LED.

https://youtu.be/L6vUkR8Ecec
niklas-k
 
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Re: DR90-A01 repair

Postby woodygb » 21 Feb 2021, 00:49

An expert is a person who has made all the mistakes that can be made in a very narrow field.
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Re: DR90-A01 repair

Postby woodygb » 21 Feb 2021, 00:59

Another post of yours mentions building a serial adapter based on a schematic found on this forum .

Your video seems to show that you have bread boarded the RS232 SERIAL version BUT you appear to be trying to connect using a TTL serial adapter.

https://www.sparkfun.com/tutorials/215

If I am correct then you simply need to swap out the TTL serial adapter for a RS232 DB9 Serial version.

OR

If that adapter has a GENUINE FTDI chip ... you could try using FTProg and invert the RX and TX signal.
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Re: DR90-A01 repair

Postby woodygb » 21 Feb 2021, 01:24

2 dynamic dongle schematic jpega comp B.gif
An expert is a person who has made all the mistakes that can be made in a very narrow field.
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Re: DR90-A01 repair

Postby niklas-k » 21 Feb 2021, 18:46

Uses USB to Serial adapter( GENUINE FTDI chip) => serial to TTL adapter => DWIZ adapterhttps://hsto.org/webt/ae/ma/s-/aemas-pypeocxyoqkvzwrbxner8.jpeg and works on one of my 2 controllers.

One short flash is low voltage but on this is one long flash.

I think I give up trying to repair it. Have another that I fixed and works well now!
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