My Samsung dishwasher is 10 years old. I have the heavy and quick lights flashing. This happened 3 years ago and I think he replaced something . Is there anyway I can do this myself.

A Samsung Dishwasher flashing the Quick light indicates a Water Supply Error (Not Enough Water) has been detected by the internal electronic diagnostics.
https://appliancerepairinfo.com/samsung-dishwasher-quick-light-flashing/

A Samsung Dishwasher flashing the Heavy and Normal light indicates a Temperature sensor Error has been detected by the internal electronic diagnostics. You can find more info here

https://appliancerepairinfo.com/samsung-dishwasher-heavy-and-normal-light-flashing/

A Samsung Dishwasher flashing the Delicate and Heavy light indicates a Heater Error has been detected by the internal electronic diagnostics. You can find more info here
https://appliancerepairinfo.com/samsung-dishwasher-delicate-and-heavy-light-flashing/

try to clean bottom filter

I think that light combination means "Drain error". Most comonnly caused by something hard getting down into the drain pump, blocking or partially blocking the drain pump impeller or the check valve inside the drain hose right next to the drain pump.

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If you have tried to unplug from mains power and there is no difference then you will need to provide the actual model number of your dishwasher in comments field.
The Samsung error codes for Normal, Heavy , Delicate lights stuck is not listed. The closest is Normal, Heavy, Quick which relates to a Low Water level. Also confirm which lights are stuck in your case and whether these are flashing or not.

If three lights are blinking (normal, heavy, quick)... I just had this same problem, and I think I figured it out. There was water on the bottom from the last cycle, so I pressed HEAVY and DELICATE at the same time for 3 seconds (you'll see it printed on the control panel), and the unit drained. I was then able to start the new cycle normally without the error. Hope that helps!

A Samsung Dishwasher flashing the Heavy Normal and Quick light indicates a Low Water Level Error has been detected by the internal electronic diagnostics.
You can find more info here
https://appliancerepairinfo.com/samsung-dishwasher-heavy-normal-and-quick-light-flashing/

Turn off the dishwasher and unplug it from the power supply. Wait 10 minutes and restore power.

3

Select a "Hi Temp" wash cycle, followed by a heated dry setting on the dishwasher.

4

Repeat step 3. This will reset the dishwasher.

I would most likely guess a faulty latch....it will cancel the cycle, thinking that the door has opened, and the lights will flash. After a certain amount of time, it might "time out" and reset and the lights would stop flashing. Unfortunately it's a bit of a guess, but the other option would be a bad control board.