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Sega GameGear Capacitor Replacement Kit

Page

V 1.6

Index

Topic

Page

Index of capacitors in kit

Introduction to the three versions of the Sega
GameGear

4-5

Using a capacitor checker

Introduction to soldering

7-8

Disassembly guide

9-12

Introduction to capacitors

13-15

Soldering surface mount capacitors

16-17

Soldering radial mount capacitors

18-19

Index of capacitors 1 ASIC (VA1)

20-21

Index of capacitors 1 ASIC (VA4)

22-23

Index of capacitors 2 ASIC

24-25

Troubleshooting section

Содержание Sega GameGear Capacitor Replacement Kit

Страница 1: ...r harmful toxins In addition the board is covered in plastic and glue that will be melted during this repair All of these substances should not be inhaled Throughout this repair you should use a fume hood to protect yourself from the dangers associated with breathing these fumes in Please do not try to do these repairs without one We are more than happy to provide you with a full refund on this re...

Страница 2: ... Sega GameGear 4 5 Using a capacitor checker 6 Introduction to soldering 7 8 Disassembly guide 9 12 Introduction to capacitors 13 15 Soldering surface mount capacitors 16 17 Soldering radial mount capacitors 18 19 Index of capacitors 1 ASIC VA1 20 21 Index of capacitors 1 ASIC VA4 22 23 Index of capacitors 2 ASIC 24 25 Troubleshooting section 26 ...

Страница 3: ... accordingly for ease of usage If you ever find what you need more of a particular type of capacitor please contact us at Starwander Comcast net We are more than happy to sell them individually Capacitor Quantity 22uF 6 3V 4 100uF 6 3V Audio Quality Capacitors 3 100uF 25V 1 100uF 6 3V 3 33uF 6 3V 1 1uF 50V 1 22uF 35V 2 47uF 4V 2 0 47uF 50V 2 820uF 6 3V 1 10uF 50V 3 10uF 16V 4 10uF 6 3V 4 68uF 6 3V...

Страница 4: ...en your console As you notice in the picture below it has one ASIC chip however some consoles have two ASIC chips Picture Introduction ASIC Chip If you console has two ASIC chips then there is only one layout of the capacitors for this version If you system only has one ASIC chip there are two layouts of the capacitors In order to find out what layout you have you need to look at the left side of ...

Страница 5: ...bove it says VA1 There is another version of the Sega GameGear with only one ASIC chip that is labeled VA4 So to recap there are three versions of the Sega GameGear in regards to the layout of the capacitors 1 One two chip ASIC version 2 Two one chip ASIC versions a One is listed VA1 b One is listed VA4 VA number ...

Страница 6: ...heck capacitors to determine if they are operating within appropriate parameters We use the CapAnalyzer 88A Series II It is very simple and operator friendly however it does cost over 200 This is a great deal of money although if you are doing regular electronics work it is a great tool to add to your collection along with a voltmeter and oscilloscope There are many capacitor analyzers on the mark...

Страница 7: ...f this project Unsoldering Correctly unsoldering a joint is rather easy once you get the hang of it In order to unsolder a joint place soldering braid over the solder you wish to remove and then place the soldering iron over the soldering braid The soldering iron will heat the braid and in turn the solder will liquefy which will be sucked up by the braid Please see the picture below Picture Introd...

Страница 8: ...nstration To apply the solder take it and place it over the soldering joint and then lightly place the soldering iron over the solder This is just like unsoldering although this time you are soldering and not unsoldering This part is a little tricky when you first start and is hard to describe with words alone It is recommended that you test out melting solder first to get an idea of how it behave...

Страница 9: ...rews and one 4 5mm Nutsetter screw that are holding the casing together and unscrew them If you do not have a 4 5mm security screw bit we sell them on our website Picture One Starting a long journey Once the screws are removed please separate the two halves of the casing and proceed to step two 4 5mm Nutsetter screw Philips Screws ...

Страница 10: ... also one cable running from the front of the casing to the back disconnect it At this point we want to remind you that the layout of your system might be different depending on what version it is Picture Two Two halves opened Once the cables are disconnected separate the two halves of the casings If any other impediments occur to prevent this please deal with them at this stage and continue onwar...

Страница 11: ...u have separated the front part from the back part back it is time to start its disassembly Please locate the four Philips head screws holding down the RF shield and unscrew them Picture Three RF Shield Once the RF shield has been removed please continue to step four RF shield screws ...

Страница 12: ...ur Mother Board Removal Once the main mother board has been removed there are two minor boards remaining 1 Power board 2 Sound board Both are easily removed from the casing as they are only held in place by two Philips head screws If you need to access them please do so at this time Now that the system is fully dissembled you are ready to start replacing the capacitors however it is important for ...

Страница 13: ...s and voltage listed on it It is important that you replace each capacitor with the same ratings as the original for optimal performance There are two types of aluminum electrolytic capacitors used by the Sega GameGear that vary on the way they mount to the circuit board Picture Five Sample capacitor radial mount The capacitor seen in picture five above features a radial mounting hence called beca...

Страница 14: ... capacitor has a negative and positive lead It is very important to make sure that you don t get these backwards The positive terminal should be soldered to the positive terminal on the circuit board and the negative terminal to the negative terminal on the circuit board Fortunately the positive terminal is marked on the circuit board however the terminals on the capacitor are not marked This is d...

Страница 15: ...acitor negative terminal In this case the strip is silver in color Please don t be fooled as the strip can be different colors Just remember that the strip always denotes the negative terminal of the capacitor The same is true for the surface mount capacitors If you look back at picture seven The negative terminal is marked by the side of the capacitor with the black half circle Now that you have ...

Страница 16: ...he other three This is because it has been damaged by improper removal of the CC104 capacitor and is now ruined While it is hypothetically possible that this can be repaired in most cases this unit may not be salvageable Please please use caution and don t let this happen Using our strategies this can be avoided 1 Do not pry the old capacitors off ever 2 Use a soldering iron with a very narrow tip...

Страница 17: ...y a small amount of solder to the negative terminal Once done place the negative lead of the capacitor onto the mound of solder and re melt the solder along the lead to sink into the mount After the terminal lead is securely attached then using a set of small pliers bend the positive lead so it sits directly over the positive contact on the circuit board and solder it into place Once finished chec...

Страница 18: ...age of soldering braid Place the soldering braid over the solder joint and then heat the joint with your soldering iron The braid will suck up the solder and free the lead You can also apply a small amount of traction on the lead by grasping the lead from the other side with a set of needle nose pliers and pulling if needed Once the leads are unsoldered please proceed to the next page Continued on...

Страница 19: ...der the leads into place Please continue replacing the capacitors as needed Here are some very important points not to forget 1 Make sure you do not bridge any terminals 2 Make sure the leads of the capacitors don t touch each other 3 Don t be afraid to bend the capacitors leads You will have to flatten them anyways to get the casing to close Once you are finished please reassembly your system and...

Страница 20: ...35V C48 68uF 6 3V C49 100uF 4V C54 0 47uF 50V C55 0 47uF 50V C68 100uF 6 3V Audio Board Listing We included audio grade capacitors for use on the audio board They are marked as such They are more expensive to use although produce superior sound quality The audio board is the circuit board with the audio dial on it Part Listing Value C1 100uF 6 3V C2 100uF 6 3V C3 100uF 6 3V C5 47uF 4V C7 47uF 4V C...

Страница 21: ...t board you will notice a variety of small parts that also have numbers that start with C that are not on the above list While these are indeed capacitors they are not aluminum electrolytic capacitors and therefore do not need to be replaced While they can fail doing so usually requires a significant surge through the board that would fire the circuit board So you can effectively not worry about t...

Страница 22: ... board They are marked as such They are more expensive to use although produce superior sound quality The audio board is the circuit board with the audio dial on it Part Number Value Mounting Type C1 100uf 6V2 Surface Mount C2 100uf 6V3 Surface Mount C3 100uf 6V4 Surface Mount C5 47uf 4V Surface Mount C7 47uf 6V5 Surface Mount Continued on next page 1 100uf 6 3V radial mount capacitors are used to...

Страница 23: ...al Mount Note While examining the circuit board you will notice a variety of small parts that also have numbers that start with C that are not on the above list While these are indeed capacitors they are not aluminum electrolytic capacitors and therefore do not need to be replaced While they can fail doing so usually requires a significant surge through the board that would fire the circuit board ...

Страница 24: ... 4V C44 0 47uF 50V C45 0 47uF 50V C48 10uF 6 3V C49 22uF 6 3V Audio Board Listing We included audio grade capacitors for use on the audio board They are marked as such They are more expensive to use although produce superior sound quality The audio board is the circuit board with the audio dial on it Part Listing Value C1 100uF 6 3V C2 100uF 6 3V C3 100uF 6 3V C5 47uF 4V C7 47uF 4V Continued on ne...

Страница 25: ...t board you will notice a variety of small parts that also have numbers that start with C that are not on the above list While these are indeed capacitors they are not aluminum electrolytic capacitors and therefore do not need to be replaced While they can fail doing so usually requires a significant surge through the board that would fire the circuit board So you can effectively not worry about t...

Страница 26: ... repair is difficult to troubleshoot due to the complexity of the repair job although here are some general guidelines 1 Make sure that the terminals of each capacitor are firmly soldered in place 2 Make sure that none of the terminals are bridge with solder 3 Make sure that none of the leads of the capacitors touch each other We do apologize that we can t be more helpful than this ...

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