Tip & How-To about Video Game Consoles & Games

Keeping your Sega CD from Short-Circuting and fix it if it does

Sega/Mega CDs are fragile systems and one power surge will kill them but you can stop it

  1. Invest in a surge protector it will easily protect your console from most surges
  2. Unplug your Sega CD when not using it this will completely stop any risk of it becoming damaged.
Repairing it is a bit of an undertakingThis Requires Soldering skills and a basic knowledge of electronic components.
This is a more "unique" fix, I have not seen this anywhere on net before. It took a few hours to find this on my Mega CD 2... But should relate to all "newer" Sega hardware. They are not in the MD 1 or SMS 1 as far as I have seen.
This info applies to the PAL (AU - EUROPE) and NTSC (USA). (And possibly most other versions as well)
The internal fuse is a resistor like component that sits at the back of the Mega CD 2 near were the switch is to sense if the CD lid is open.
On this board the fuse is located on the soldering side, labelled "F301", and is rated at 2.5A. It is beige in colour( US Mega CD 2) OR Bright Green ( PAL Mega CD 2).
All you have to do is use a fuse holder with wire fly leads. Solder one of the leads to either end of the PCB were the legs of the internal fuse are.
Picture of a M205 in-line fuse holder with fly leads. (You can use 3AG size fuse holder.. they are just larger.. Which makes it harder to fit in the case.)
Pop in a 850mA fuse (AU PAL Mega CD 2) Will be higher around 1-1.5 A for the MD 2 or SMS 2. (don't exceed 2A).




1. Open Mega CD II, Remove the screws (5) that hold down the metal shield (Red Arrows). Also there are 2 metal "tags" that hook under the slot were the MD connects to the Mega CD (Blue Arrows). These need to be bent back so the shield can be lifted up.


2. The shield has been removed. The fuse is located in the red circle area.


3. View from the left hand side.


4. Close up of the fuse marked "F301"

There are a few versions of Mega CDs and Megadrives that don't use the fusible resistor like the one in the picture above. Instead underneath the PCB in about the same location is a white rectangle surface mounted fuse. Should have like X.X A on it. To fix this... you do the same thing.. But solder each end of the fuse holder to each side of the surface mount fuse. I think it is still labelled "F301" though. Below is a picture of it...

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surge protector was blinking. smelled a little electrical burn odor. pluged tv directly to wall..all I hear ia a click noise..nothing lights up . help!


The surge protector has likely committed suicide... or died by homicide. In other words, it may have done its job, or been fried trying. Either the breaker/fuse inside melted by design due to a surge, or it died.

A surge protector is only designed to protect you from many small/everyday surges, or ONE BIG ONE. The cumulative wear of small surges will eventually kill them as well. They don't last forever, and some experts recommend replacing them every 3 years or so for safety/performance.

Some surge protectors have a reset switch or a replaceable fuse, but since you smelled something burning, I highly recommend tossing it in the garbage (if not still on fire, hee hee), and get a new surge protector for safety. Your house is worth the $25+. If you have had any other electrical issues in your home lately, get an electrician to do a quick safety inspection as well. Be safe!

PS: Not all surge protectors are created equal. Look for one that has "lighting protection" and costs at least $20-25 , or you likely don't have decent protection (the ones I buy are usually $30-$35, but I watch for sales and keep an extra on hand). Never overload a surge protector or wall outlet. Read the manual for the total watts,etc. supported. And don't expect to collect on the $50,000 equipment damage guarantee some surge protectors promise.


Dec 02, 2013 | Televison & Video

1 Answer

How do i stop lightning from getting in my hdmi lines and shocking my tv? 5 tvs went down in one storm


I would recommend getting a surge protector and using that to protect your televisions. This usually will stop something the lightning from killing your tv's.. I have a surge protector and can still use my tv, computer, anything I have plugged in during a storm.

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after an electrical storm the vcr combo do not come on


johngreen,


Unfortunately this is a worst case scenario. Electrical storms with electrical surges can wreak havoc on all electrical devices if they are not protected with a surge protector. The bad thing is it will cost to more money to have the board replaced as opposed to buying another unit. In the future it is best to invest in a surge protector and protect all your electronic devices. Thanks for visiting FixYa.com.



Sincerely,
TechGuy21

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DVD Recorder - The Instruction Manual says not to swith off during recording. We were recording a program when we lost power. DVD Player will now power on for just a minute and then automatically switches off. Any clues ?? Thanks Chris


if you were not using or using a cheap surge protector it probably fried it this happened to myself with a 6,000 tv i learned the hard way invest in a good line conditioner/surge protector 50.00 to 150.00 protect your electronics so this doesnt happen again. im sorry i couldnt have told you before this happened

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Surge Protector


Surge Protectors are devices that usually you plug your equipment to.. and it protects it from Voltage Spikes that would otherwise destroy the device without it.. saddly not all Surge Protectors are the sam.. some are completely useless..

If you are really serious about protecting your PC not just the hardware but also the data and your work.. might as well invest on a UPS(Uninterrupted Power Supply) unit.. it has everything a surge protector can offer and more..

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