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Title: Konami Repairs Post by: channelmaniac on September 16, 2008, 01:13:37 AM Fixed: TMNT (Teenage Mutant Ninja Turtles):
Symptom: Garbled background and foreground graphics Repaired 2 gouged traces to fix the foreground objects. Resoldered cold solder joints on the background ROMs to fix background images and score/health display. Title: Re: Konami Repairs Post by: channelmaniac on September 16, 2008, 01:13:57 AM Fixed: Crime Fighters:
Symptom: ROM error and garbled foreground graphics Pulled the ROM and compared its checksum against the MAME database. ROM was good but the data line was held low. It connected to a Konami custom surface mount chip. Swapped out bad custom chip "051962" with one from a dead Konami parts board. Title: Re: Konami Repairs Post by: channelmaniac on September 16, 2008, 01:14:14 AM Fixed: Run and Gun
Symptom: Dead A physical inspection turned up 2 gouged traces and bent pins / busted solder joints on 2 surface mount ICs. Fixed the traces, bent pins, and busted solder joints. Board would still not boot. Checked the ROMs on the board. Replaced one bad Mask ROM, one bad EPROM, and erased/reprogrammed a third EPROM to match the code used in replacing the bad program EPROM. Title: Re: Konami Repairs Post by: channelmaniac on September 16, 2008, 01:14:33 AM Fixed: Lethal Enforcers II
Symtom: No video Replaced a broken 056820 hybrid IC with one from a parts board. Board works but the connectors between the top and bottom board are finicky. You have to push them together firmly to keep from getting graphic corruption on the foreground characters. Cannot fully test it since I don't have any guns to connect to it. Title: Re: Konami Repairs Post by: channelmaniac on September 16, 2008, 01:15:03 AM Fixed: Run and Gun
Symptom: Ressurect parts board A physical inspection turned up patched JAMMA connections, 5 missing ROMs and a missing sound CPU. Fixed the JAMMA connector, burned new EPROMs, and replaced the missing sound CPU. Board would boot but give RAM errors for 27H and 29H and a bad EEPROM error. RAMs had no address line activity. Noticed one desoldered hole next to the RAMs. Checked the MAME board pics and the board was missing a chip - 74LS244. Replaced the missing chip and the board would boot and pass the RAM diagnostics but still gave an EEPROM error. Found the reset instructions for Konami boards: power it up with the test switch pressed. This caused the game to reset the EEPROM data which finished the game repair. Title: Re: Konami Repairs Post by: channelmaniac on September 16, 2008, 01:18:08 AM Model: Various Konami games
Tip: Resetting EEPROM data When repairing Konami boards it is important to remember that the NVRAM data saved on the EEPROM chips is directly related to the versions of the code in ROMs/EPROMs on the game. If you are replacing code with a different version, wheter to upgrade it or simply because that was what was available in MAME to use for repairs, you will most likely need to reset the EEPROM data. To do this hold down the test button located on the game board itself and turn power on. Release the switch when it tells you on the screen. You have just reset the EEPROM data. Title: Re: Konami Repairs Post by: channelmaniac on February 08, 2009, 12:54:28 AM Model: Monster Maulers
Symptom: Corrupt graphics colors. Tapping board made problems come & go Resoldered surface mount IC 25V and tested board. Title: Re: Konami Repairs Post by: channelmaniac on February 20, 2009, 03:19:08 AM Model: Contra
Symptom: Horizontal white lines on the screen The board had horizontal white lines through all background images. Player and power ups looked normal. Checked the ROMs on the board and found the video ROM at location 7F had all outputs stuck high. The ROM was a 2Mb mask ROM with an odd pinout. Used a 27C400 EPROM to replace it. Tied pin 1 (A17) to ground. The pin was left floating on the board since it was unused on the 2Mb ROM. Played a game to test the board. Title: Re: Konami Repairs Post by: channelmaniac on March 08, 2009, 02:07:19 AM Model: Gokukyo Parodius (Fantastic Journey)
Symptom: Dead Board would boot with out the ROM board attached. ROM board would boot when put on a different main board. Swapped out connector CN106 and CN107 on the ROM board and CN106 on the main board. Tested game. Connectors were spread out and very loose. The boards worked when swapped with different ones due to differences in tolerances. Title: Re: Konami Repairs Post by: channelmaniac on March 17, 2009, 03:14:35 AM Model: Tokomeki Taisen Puzzle Dama
Symptom: Corrupt Graphics Board had problems with the main board. Removing the ROM board and tapping on the main board would result in green flashes on the screen. Resoldered 31S, 25S, and 16G. 14P had been replaced before and had bent pins. Straightened one pin and resoldered the chip. Tested board. Title: Re: Konami Repairs Post by: channelmaniac on May 06, 2009, 01:47:42 AM Model: Hyper Sports
Symptom: Dead Board would display garbage upon power up. Checked and cleaned the program ROM legs. Repaired a corroded leg on the C06 EPROM then replaced corroded socketson the C05 and C06 EPROMs. The board would then power up and play but had graphics corruption on text elements. Cleaned the EPROM and custom chip legs on the video board to finish the repair. Title: Re: Konami Repairs Post by: channelmaniac on May 25, 2009, 05:35:55 PM Model: Martial Champion
Symptom: Corrupt Graphics. Character graphics and some scaling background graphics corrupt. Some graphics partially off screen. Board passes initial self tests. Pushing down on the surface mount ICs had no effect. Pushed the test button and ran the Mask ROM test. ROM 22K, 20K, 19K, 17K, 12K, and 10K were showing to be bad. These ROMs were connected to the surface mount custom IC 055673 at location 14K. Resoldered the chip to fix the corrupt graphics. Title: Re: Konami Repairs Post by: channelmaniac on June 05, 2009, 11:50:37 PM Model: Time Pilot
Symptom: Dead Replaced 1 bad socket and cleaned the corrosion off and repaired a broken pin on a custom Konami IC. Replaced 1 corroded capacitor and resoldered one that had come loose from its solder. Tested board. Title: Re: Konami Repairs Post by: channelmaniac on June 27, 2009, 12:59:31 AM Model: Time Pilot '84
Symptom: Burnt edge connector Board had burnt edge connector contacts for the +5v and ground connections. Removed the bad traces and laid down new ones with copper tape. Tested. Title: Re: Konami Repairs Post by: channelmaniac on August 17, 2009, 11:46:00 PM Model: The Simpsons
Symptom: Will not boot. Bad ROM error Board had attempted upgrade and repair damage. Many plated through holes and traces were damaged on the sound ROM and around the sound ROM. Replaced 2 bad sockets and patched 10 traces. Board would then boot but was stuck in a reboot cycle when trying to test the ROM in location 15C on startup. Reset only happened when the board was first powered on after sitting. Custom IC 051550 was resetting the system. Soldered JP1 to disable the watchdog to finish the repair. Title: Re: Konami Repairs Post by: channelmaniac on August 17, 2009, 11:46:40 PM Model: Mystic Warriors
Symptom: EEPROM Error EEPROM IC tested good. A check of pin 3 showed it was shorted to ground through approx 26 ohms. Replaced the shorted 74LS273 at location 15G, reset the EEPROM data, and tested the game. The game worked but was missing text and motion graphics. Resoldered the surface mount chip at 14K to finish the repair. Title: Re: Konami Repairs Post by: channelmaniac on August 30, 2009, 05:00:40 AM Model: Metamorphic Force
Symptom: Left input for player one not working Patched bad trace and tested board. Title: Re: Konami Repairs Post by: channelmaniac on September 07, 2009, 04:44:07 AM Model: Mystic Warriors
Symptom: Board would start self test and stick at "RAM ROM CHECK" Board would boot into an EEPROM test/initialization if the test button was held down when powered on but would lock up when trying to normally start. The hybrid sound module, part # 054986A was cracked into 2 pieces. Replaced the hybrid module with one from a donor board and tested the game. Title: Re: Konami Repairs Post by: channelmaniac on October 22, 2009, 12:52:36 AM Model: Mystic Warriors
Symptom: Input problems Checked the JAMMA edge connector with a logic probe and found correct logic levels: high when button is open and ground when closed. Checked the traces through the resistor networks and back to the 74LS257 at 19B. Logic levels were good going to the chip. Replaced the bad chip and tested the game. Found some corrupt graphics. Resoldered the surface mount chip at 14K, 14J, and one side of 8J to fix. Title: Re: Konami Repairs Post by: channelmaniac on January 01, 2010, 06:19:43 AM Model: The Simpsons
Symptom: Stuck in reset (Watchdog) The data bus lines were stuck high. Checked the 74LS245 at 12D. It was good. Pin 22 at 13C and 15C should've mirrored pin 22 at 16C/17C but was stuck high. Repaired broken trace between 3F pin 8 and pin 22 of 13C/15C. Tested game. Title: Re: Konami Repairs Post by: channelmaniac on January 02, 2010, 01:57:00 AM Model: Mikie
Symptoms: No audio Board had physical damage. Replaced 3 broken capacitors, 1 LM324 Op-Amp, and the LA4460 audio output IC. Tested game and found corrupt graphics. Reprogrammed the EPROM at H1 with the code for the USA version. It had the Japanese version of code on it. Title: Re: Konami Repairs Post by: channelmaniac on January 02, 2010, 02:00:13 AM Model: Mikie
Symptoms: Corrupt graphics This board was in strange shape with extra chips on it. Removed 3 EPROMs with incorrect code from the board. The board had the 27128 version chips and some of the 2764 version of chips on it. The 2764 chips were not necessary for the game to operate. Verified the remaining EPROMs were correct and in the proper position on the board. Address lines A0 and A10 on the graphics EPROMs were stuck high. Replaced a bad 74LS373 IC at C6 to fix the graphics problems and tested the board. Title: Re: Konami Repairs Post by: channelmaniac on March 21, 2010, 01:32:06 AM Model: TMNT
Symptom: Graphic Corruption Model would play but had lines in the graphics. Replaced bad ROM and tested. Title: Re: Konami Repairs Post by: channelmaniac on April 04, 2010, 02:30:10 AM Model: Metamorphic Force
Symptom: Graphic issues Background and foreground graphics would disappear when board is flexed and/or tapped. Reflowed custom surface mount ICs at 7K, 12K, and 15K and tested. Title: Re: Konami Repairs Post by: channelmaniac on April 04, 2010, 02:31:55 AM Model: Bucky O'Hare
Symptom: Missing color The blue output was missing. The custom hybrid, number 054573 at location U73 had inputs but no outputs. Replaced the hybrid and tested. Title: Re: Konami Repairs Post by: channelmaniac on April 26, 2010, 03:33:58 AM Model: Simpsons
Symptom: Plays blind - random garbage on screen. Board would sometimes work perfectly then on next power up be scrambled again. Resoldered damaged pins on 053247 at 7J and repaired 1 shorted trace where a solder pad was mashed into a neighboring trace. This helped but did not fix it. Replaced missing 051550 hybrid IC and tested. Board worked except was missing sounds 01 through 28. Found a factory solder bridge between pins 23 and 24 of 053260 at 3E. Removed the bridge and all the sounds are now working. Ran self tests and found the P4 down control stuck low. Replaced a bad 005273 hybrid module at S37 to fix. Played the game all the way through to check it out. Title: Re: Konami Repairs Post by: channelmaniac on July 25, 2010, 08:50:10 PM Model: Hyper Sports
Symptom: Dead. Graphics corruption. Foreground AND background. This is a board from hell. Not sure what happened to it but it HAD to be a power surge of some kind. Replaced the 74LS04 on the CPU board to fix the dead CPU issue. On the video board, EPROM C26 was bad. Replaced. Signals on the address lines of C11 to C18 were incorrect. Replaced F15 and F16 Working backwards from the video outputs I found: Output pins stuck on MOST LS157 ICs. Replaced C17, D17, E17, D16, and A4 Output pins stuck on D11, E11, E12, G12, E13, F13, G13, and F14. Pins racing on D9, E9, E10, H10, and J10. All of those chips tested bad on my EPROM programmer. Now I have graphics but have some sparklies around border graphics and a missing title screen to track down. Bad LS377 at H12 on the video board. Replaced and the board is now fixed. Title: Re: Konami Repairs Post by: channelmaniac on July 25, 2010, 08:54:11 PM Model: Hyper Olympics 84
Symptom: Dead CPU board tested good by substitution. Replaced bad 504 and 082 custom Konami chips. Board now runs but has corrupt player graphics. Signal DM7 (pin 11 of H3) is stuck low causing the corruption. The chip at H3 and the chips it drives at J4 and H4 are all good. The CLK4 signal is incorrect. A check of a good board shows pulses in groups of 3 and the bad board shows pulses in groups of 2... Replaced a bad 74LS20 at location E16 to finish the repair. Title: Re: Konami Repairs Post by: channelmaniac on August 04, 2010, 12:15:57 PM Tip: Konami custom chip replacements
Konami used some PC daughter boards to replace custom ICs. PWB 402034 = Custom IC # 501 PWB 4000206A = Custom IC # 504 Title: Re: Konami Repairs Post by: channelmaniac on August 15, 2010, 02:47:21 PM Model: Mystic Warrior
Symptom: RAM Failure Self test showed that 9E, 10E, and 11E had failed. Inspected the board and found 3 bent/shorted pins on the custom IC 054338 at 10C. Fixed the pins and tested the board. Title: Re: Konami Repairs Post by: channelmaniac on August 16, 2010, 01:46:29 AM Model: Jail Break
Symptom: Audio issues Reseated the audio CPU as it was partially out of the socket. Board would not accept any coin inputs for coin slot 1. Replaced a custom 005273 hybrid and the 74LS253 IC it was feeding. Tested game. Title: Re: Konami Repairs Post by: channelmaniac on August 17, 2010, 02:31:16 AM Model: Hyper Olympics (bootleg)
Symptom: Short Short circuit was caused by an extra ground wire not listed on the pinouts in the manual. This was shorting the -5v from the power supply to the ground through the Konami to JAMMA adapter. Cut the trace to the edge connector, replaced a physically damaged capacitor in the audio section, and tested. Title: Re: Konami Repairs Post by: channelmaniac on October 02, 2010, 11:46:31 PM Model: Warzaid
Symptom: No sync Replaced back chip a U31 and tested. Title: Re: Konami Repairs Post by: channelmaniac on October 08, 2010, 03:27:12 AM Model: Bucky O'Hare
Symptom: Up control stuck on Replaced bad hybrid module 005273A and a bad 74LS257 IC. Jumpered 1 bad trace and tested. Title: Re: Konami Repairs Post by: channelmaniac on October 09, 2010, 03:12:42 AM Model: The Simpsons
Symptom: EEPROM Error and no red output Removed a solder splash bridge between pins 15 and 16 of the IC at 11D and reset the EEPROM data to fix the error. Replaced the custom hybrid 052535 on the red output to restore proper colors. Title: Re: Konami Repairs Post by: channelmaniac on July 30, 2011, 05:12:49 PM Model: The Simpsons
Symptom: Crashes Randomly Board would pass self tests and play in attract mode but would crash randomly when playing the game and when running ROM tests from the menu. Replaced a mix-matched set of program EPROMs that were 120 to 200ns with 4 matched 100ns EPROMs. Board ran and passed all self tests. Played the game through to the end to test. The 2 200ns EPROMs were too slow for the CPU and were causing random crashes.. Title: Re: Konami Repairs Post by: channelmaniac on January 03, 2012, 04:22:43 AM Model: Teenage Mutant Ninja Turtles
Symptom: RAM/ROM errors Board had physical damage. Fixed bent pins on 3 custom ICs. Resoldered one side of 2 custom ICs to fix solder wipe shorts. Repaired 9 gouged traces. Tested. Title: Re: Konami Repairs Post by: channelmaniac on January 16, 2012, 02:52:28 PM Model: Various
Tip: Konami 007232 Pinout This is the D/A Converter IC used in many Konami games for sound effects along side the YM2151 FM music synthesizer chip. Here is a preliminary pinout based on a Super Contra game that was pinned out. There are still unknown pins on the IC and missing functions that need to be mapped to it such as R/W and /IRQ. It is also missing a 3rd select line for ROM access select. Code: 1 - CPU Data 0 Title: Re: Konami Repairs Post by: channelmaniac on February 27, 2012, 05:47:17 AM Model: Super Contra
Symptom: Garbled Audio This one took a long time to track down. Replaced female socket connector between the CPU board and the ROM board. Tested. Title: Re: Konami Repairs Post by: channelmaniac on April 10, 2012, 11:42:52 PM Model: Teenage Mutant Ninja Turtles
Symptom: RAM Error Replaced 1 SRAM, 1 74LS245, and 1 74LS32 IC. Tested. Title: Re: Konami Repairs Post by: channelmaniac on April 10, 2012, 11:45:42 PM Model: TMNT - Turtles in Time
Symptom: RAM Error Removed foreign substance from the board and patched 1 trace. Tested. Title: Re: Konami Repairs Post by: channelmaniac on October 14, 2012, 02:39:48 AM Model: Time Pilot 84
Symptom: Graphic corruption Replaced a bad 74LS273 and 74LS86 to fix the background graphics corruption. Replaced a bad 74LS273 to fix the player/enemy sprite corruption. Tested. Title: Re: Konami Repairs Post by: channelmaniac on December 30, 2012, 03:33:36 AM Model: Time Pilot
Symptom: Dead Board would boot if powered on multiple times. Recapped reset circuit and tested. Title: Re: Konami Repairs Post by: channelmaniac on December 30, 2012, 03:34:03 AM Model: Tutankham
Symptom: Dead Board would boot if powered on multiple times. Recapped reset circuit and tested. Title: Re: Konami Repairs Post by: channelmaniac on December 30, 2012, 03:35:22 AM Model: Loco-Motion
Symptom: Reboots while playing. No audio. Caps had leaked electrolyte out the negative leads. Removed caps, cleaned board, and recapped. Replaced 2 bad Program EPROMs. Audio IC had every pin clipped. Soldered on new leads and reinstalled. Tested board. Title: Re: Konami Repairs Post by: channelmaniac on March 02, 2013, 09:42:27 PM Model: Teenage Mutant Ninja Turtles (TMNT)
Symptom: Low audio and distortion Replaced bad audio pot, recapped audio section, and tested. **edit** Board was sent back for the same problem. Found that the problem was worse the longer it was on and that pin 12 of LM324 at U91 had spurious signals on it when the sound was going bad. Replaced 3 tantalum capacitors at C7, C12, and C8. Played through the whole game to test. Title: Re: Konami Repairs Post by: channelmaniac on March 17, 2013, 05:06:05 PM Model: Life Force
Symptom: Dead, garbage on screen. Replaced bad 74LS244 at 20D and 19J on the CPU board to fix it. Replaced bad 74LS04 at 10C and 74LS86 at 9D on the video board to finish the repair. Title: Re: Konami Repairs Post by: channelmaniac on March 18, 2013, 12:55:38 AM Model: Nemesis
Symptom: Dead Replaced 2 74LS245 ICs and 2 SRAMs on the CPU board. Replaced 1 74LS273 IC on the video board. Tested. Title: Re: Konami Repairs Post by: channelmaniac on April 07, 2013, 02:01:29 AM Model: The Simpsons
Symptom: Dead Removed 1 short from the bottom of the board where a trace was smeared over to the adjacent plated thru hole. Board booted but reported a bad RAM. Patched a damaged trace and tested. Title: Re: Konami Repairs Post by: channelmaniac on April 07, 2013, 02:02:08 AM Model: X-Men
Symptom: No audio Recapped the audio hybrid module and patched one trace on it. Tested. Title: Re: Konami Repairs Post by: channelmaniac on September 07, 2013, 12:44:15 AM Model: Gyruss
Symptom: No sound. Missing heatsinks. White line on top of screen. Replaced bad audio amplifier and 4 100uf capacitors. Installed 2 heatsinks. Resoldered pulled cap on IC at A6 and cleaned the legs on the 3 PROMs to fix the video issue. Tested. Title: Re: Konami Repairs Post by: channelmaniac on September 08, 2013, 03:59:51 AM Model: Track and Field
Symptom: Corrupt graphics and speech. Cleaned the speech ROM's legs and replaced the corroded socket. Jumpered a gouged trace on pin 2 of the 2128 SRAM chips. Tested. Title: Re: Konami Repairs Post by: channelmaniac on September 13, 2013, 03:35:47 AM Model: Track and Field
Symptom: Dead Cleaned pins on the CPU and replaced bad socket. Cleaned pins on the ROMs at A1/A2. Board booted but had corrupt graphics. Replaced a bad 74LS377 to fix the graphics corruption. Graphics were misplaced horizontally and runner would run off the right side of the screen during the long jump on attract. Replaced 74LS08 @ 2F which had a dead output. Replaced 74LS139 at 14D which had a dead output to fix the graphics misplacement. Replaced bad 74LS273 at 13E to fix a background color problem. Tested. |