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Hi, i just put 230v trough my Japanese sega saturn and it looks like it has blown a couple of capacitors and im after a replacement board the model number is s-7218 voltek 34507-8 any help would be appreciated, thank.

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SOURCE: Manual

Try this site and see if it helps:

http://safemanuals.com/brand-user-guide-instructions-owner-manual/GAMES%20SEGA%20SATURN

Posted on Jun 12, 2008

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humanman42
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SOURCE: i need a circuit board diagram for a sega game gear

The best place for this type of question, by far is www.benheck.com . There forums are a godsend for anything videogame repair. Promise!

Posted on Dec 02, 2008

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SOURCE: Help. I have a Sega Saturn Model#80000 and I need

Hi see www.gameoz.com.au they have a huge range of retro gear and manuals as well

Posted on Oct 14, 2010

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Replaced capacitor on sega game gear for sound but I get a blast of sound in the backdrop I hear whistle noise whats going on. Is it because i used a 220 uf 50 volt capacitor and if so then why am i...


I apologize for not getting back to you sooner on this one, to be honest, im not terribly familiar with replacing capacitors on game gears, however that would appear to be the issue, someone else might be better suited to help with the technicalities on that one. Sounds like Ironfist109 knows what he's talking about. Again, sorry I wasnt any more help =\

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Yes, that is a run capacitor. You will also need to clarify oval or round design.

You should take the old one in to a local electric motor repair shop if it is not obvious it is blown. Even if it is, their will be other issues that caused the capacitor to fail in the first place. You will want to try to identify those and fix them as well or you will be replacing the capacitor again soon.

John

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Hi, my sega game gear has a very dim screen, what can I do?


A weakness of all Sega manufactured Game Gears is a particular type of electronic component used in various parts of the internal circuitry; the SMD (surface mount) electrolytic capacitor. Many years ago these components were a common cause of camcorder faults. Now, as Game Gears getting to be 15+ years old, they are suffering from the "bad cap's" phenomenon too.
The symptoms of faulty capacitors include:
  • LCD Screen only looks good when viewed at an unnatural angle (anything other than 90 degrees).
  • Bright parts of the picture create 'ghost lines' in the dark parts.
  • Screen looks washed out, dim, and lacking in contrast.
  • Turns itself off (in extreme cases).
  • Problems are alleviated when unit has warmed up a bit.
Further confirmation can be had by opening the unit and examining the board area around the capacitors. Faulty capacitors will often (but not always) leak their corrosive electrolyte onto the surrounding board. This is a clear, oily substance which can may attack the cap's legs and surrounding components, leaving a green corrosion behind.
6ada731.jpg
If one is faulty, the rest won't be far behind. Replaced them all at once!
These capacitors are glued and soldered to the board. To remove one, carefully rock it from side to side with a small pair of pliers until to feel the glue break, then desolder each leg from the PCB. When they're off, take the opportunity to clean up any leaked electrolyte and corrosion. Metho (rubbing alcohol to the Yanks) is good for this.
There are two versions of the Game Gear, the main difference being the main board layout. The later model also combined it's two ASICs (custom chips) into a single IC. There are other board layouts out there, if you have a Game Gear whose capacitor collection doesn't match the table send me a list and I'll update the page. Here is a list of all electro capacitors on the main board.
Mainboard
ONE ASIC GG TWO ASIC GG VALUE C68
C43
C45
C55
C54
C48
C49
C1
C4
C14
C48
C11
C31
C49
C35
C45
C44
C38
C39
C1
C3
C14
C48
- 100μ 6.3V
22μ 6.3V
4.7μ 35V
0.47μ 50V
0.47μ 50V
68μ 6.3V
100μ 4V
33μ 6.3V
10μ 6.3V
10μ 6.3V
10μ 6.3V
10μ 6.3V

Audio Amplifier Board
DESIGNATOR VALUE C1
C2
C3
C5
C7 100μ 6.3V
100μ 6.3V
100μ 6.3V
47μ 4V
47μ 4V
Some things to consider when shopping for replacement capacitors:
  • Replacements should have the same capacitance (in μF - micro farad) and the same or higher voltage rating.
  • Standard RB/Radial (both legs poke out from the bottom) electrolytic capacitors are fine.
  • Sub-miniature types are even better.
  • If you cannot find the correct value then connect two small caps in parallel. Tolerance is typically +/- 20% so no need to be too precise. E.g. 47μ // 22μ in place of a 68μ value.
If you find the sound from the internal speaker to be missing or distorted then a faulty C7 (47μ) on the audio board is the likely cause. If there also distorted audio on from the headphone jack then you many need to replace all capacitors on the audio board.
Capacitors on the power supply board are generally reliable, not being of the surface mount type.

Jan 10, 2010 | Sega Game Gear Console

1 Answer

Sega saturn resets


It's the Saturn's equivalent of a PC's CMOS battery, and it has gone bad.

The battery is the ubiquitous CR2032, and can be found at the jewelry/watch counter at Wal-Mart, as well as just about any local hardware store!


Here's how to replace:

http://www.retrogarden.co.uk/features/how-to-replace-the-battery-on-a-sega-saturn/

or

http://www.classicplastic.net/dvgi/features-MODSSATURNbattery.html

Mar 16, 2009 | Sega Saturn Console

1 Answer

I need a circuit board diagram for a sega game gear


The best place for this type of question, by far is www.benheck.com . There forums are a godsend for anything videogame repair. Promise!

Oct 21, 2008 | Sega Game Gear Console

3 Answers

Sega Saturn Games will not boot, games show up as audio cds


I know what's causing the problem--the spindle motor for the CD's doesn't spin fast enough to read the disc properly; this usually happens when the system gets hit too hard or is dropped. This causes games to recognized as audio CD's and also causes the tracks to play improperly (there will be complete silence when a track is played and possibly some static at the beginning and the cubes an the sides of the display will be distorted and blown up.IF THIS DOES NOT HAPPEN THEN DO NOT ATTEMPT THIS.)Before starting, make sure the system is plugged in, there's no controller connected, and the system is NOT hooked up to a tv. Okay, now this is where it gets complicated. first, take the top of the system off and locate the disc drive switch. Depending on which model your console is, it'll be in different places. On the newer model (the one that has a PC board on the top cover), it'll be on a small PC board on the opposite side. On the older model (the one that has all the PC boards on the bottom), it's sticking up out of the metal plate between the two PC boards(the little clear plastic thing with copper plates inside). Either way, the switch needs to be held down or taped down.(I suggest taping it, but it may not work with the older system.) There are a few little variable resistors (little upright disc-shaped things) on the top left corner of the exposed circuit board (the one with the CD lens on it). Try adjusting those with a small flat-head screwdriver with the system turned ON and a CD on the spindle. Be CAREFUL--do NOT touch the CD while it's moving and keep your hands away from the PC board on the left--It WILL shock you. Adjust the resistors untill the CD spins the fastest. If the CD stops spinning, pull off and then replace the tape. If it doesn't spin at all in the first place, check the tape. Once you get it spinning as fast as possible, hook the system back up to your television WITHOUT replacing the cover. If it reconizes the CD as a game, your done and you can close it up. If it thinks its an audio CD or doesn't read it at all, the resistors need more adjusting. This work can be very trying and dangerous; this method can also ruin your system, but it's the only way to make it work without replacing any parts, but it DOES work. If you have any questions, ask me.

Apr 06, 2008 | Sega Saturn Console

4 Answers

Red blinking light on a Magnavox Plasma TV


Here is the solution. For less that 100$ your Magnavox Plasma TV. Model # 50MF2310/37 will be running like a champ.

Issue:

Magnavox Plasma TV. Model # 50MF2310/37 screen has no picture. There is no sound, TV comes on and then after a few seconds clicks and screen remains blank.

Cause:

On the main power circuit board to Capacitors are prone to failure from over load. The caps are 3300uf 10v 105+c capacitors located to the left of the AC power input.

Service:

Magnavox will refer you to a service center. They will advise $$$ for an inspection. They will also want to charge upwards of 500$ to replace the entire board.

Solution:

1. Unplug your TV
2. Disconnect all connections from your TV
3. With assistance lay your TV on its face on a non-scratching service
4. Remove the back panel screws.
5. Lift back panel off
6. The central board is your main power board.
7. Remove all wire harnesses from the main board.
8. Remove all screws that are holding the main board in place.
9. Lift the main board out and carefully place it into a non electromagnetic pouch.
10. Take the board to a Circuit Board repair shop.
11. Have them replace the the above mentioned Caps.
12. Re-install the board in your TV.

NOTE: Replace the caps with 3300uf 16v 105+ high temp caps(preferrably Japanese caps)

This fix cost me 80$ and my time to search for other who had the same issue. Try searching for Magnavox Plasma TV. Model # 50MF2310/37 bad circuit board or Magnavox Plasma TV bad capacitors or Magnavox Plasma TV bad ciruit board.

Hope this all help, Magnavox is should take ownership for this problem and recall any tv's that have these caps in them. The worst part about this is that teh **** from the repair center that was paid 100$ to check the TV, stripped out the screw holes and damaged the case for the TV.

Portland Laptop Repair was awesome. They repaired the board and it looked like new. Check them out at http://www.laptopportland.com/

Jeff G
Portland, OR

Feb 10, 2008 | Akai PDP4294 42 in. EDTV-Ready Plasma...

1 Answer

STK392s didn't solve the problem


Hi. Im not 100% familiar with your model toshiba but they are all similar so try this. (1) RESOLDER MEMORY ICS ON THE TEXT BOARD, A COUPLE OF THE LEGS LIFT OFF THE BOARD. (2) RESOLDER ALL PINS OF THE OUTPUT IC'S, EVEN THOUGH THE DON'T LOOK DRY: Q750,Q751 AND Q753. RESET CONVERGENCE IN SERVICE MODE. CHECK RESISTORS, CPS, & REPLACE ANY BULGING CAPACITORS NEAR THE CONVERGENCE ICS. As I said im not to familiar with your model it may or may not have the exact components I have listed in parts (1)&(2) But its worth checking just in case it does.

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