Modify your old console without soldering skills or expensive tools I will do it for you.
Kaico DCHDMI DC Digital install service form:
If you are going to purchase yourself : Purchase.
I really recommend this mod since its on stock not like the other hdmi mods that rarely build units even so they out of stock after some minutes.
I do not offer this install service since doens't require soldering skills but I recommend this mod.
You can purchase GDEMU at the official site for 130 €: Purchase official GDEMU
Or get a clone for around 50 € on ebay, as far as I know there is not major difference apparently you need a official one in order to have firmware updates, adn I guess that the clone material quality is a little worse.
I do not offer this install service since doens't require soldering skills but I recommend this mod.
You can purchase MODE at the official site for 182 €: Purchase official Terraonion MODE
This is the same thing than GDEMU but it allows 2.5hdd, USB, and MicroSd in addition it works for Sega Saturn and Playstation 1 aswell.
I replace all the old main motherboard smd capacitors with high quality solid state capacitors
Dreamcast recap service
Include new battery
For PSU I suggest directly replace for PICO PSU