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Re: Another question for Micheal

 

Dear Paul,

I recently repaired a similar unit.
It is unfortunately common to have a serial port chip or it's surrounding capacitors blow out.??

That unit had a MAX232 Maxim chip and 1uF ceramic caps.? I replace the chip and I use 40 volt rated caps to replace the chips caps.??

I also add TSV or zener protection devices to the back of the board to protect the serial port nodes in the future.??

If you want me to repair yours, send it to me late next week.? I'll send you my contact info privately.??

Very best,
Michael

On Fri, Feb 4, 2022, 4:18 PM Paul Romero <paul@...> wrote:

[Edited Message Follows]

Thanks for the Gemini 1 advice, Micheal. Can you help me troubleshoot a Gemini 1 board?
I think a power surge took out my unit. It no longer communicates with the PC. I have attached a photo of a suspicious looking burnt component. I have the Gemini 1 with the RJ connectors, so it's an older board.?
Could this be the problem with the rs-232 communication to the PC?
Could I cut my defunct HC cord and modify it to attach to a USB port on the PC and bypass this burnt thingies l, if so?
Is this repairable?
Clear Skies,
Paul

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