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Author Topic: Konami Games  (Read 44542 times)

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Offline channelmaniac

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Re: Konami Games
« Reply #140 on: June 13, 2022, 01:35:02 PM »
Model: Lethal Enforcers
Symptom: Bad sound

Replaced hybrid module and tested. Replaced bad DAC and retested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

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Re: Konami Games
« Reply #141 on: July 04, 2022, 07:10:18 PM »
Model: Lethal Enforcers
Symptom: No sound

Replaced shorted audio amp IC, hybrid, and DAC. Tested. Board failed 2 mask ROM tests. Installed 2 Kynar jumpers to fix. Replaced 2 physically broken filter caps and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #142 on: August 07, 2022, 11:56:09 PM »
Model: X-Men
Symptom: No audio

Replaced sound hybrid module with an aftermarket one and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #143 on: October 26, 2022, 02:29:54 PM »
Model: Lethal Enforcers
Symptom: Audio issues

Replaced bad sound hybrid module and DAC chip. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #144 on: November 08, 2022, 12:12:38 AM »
Model: Hyper Sports
Symptom: Corrupt graphics, starts game before you can enter name, bad sound pitch

Replaced four corroded sockets on the video board to fix graphics issues. The other two issues were on the CPU board and were hard to track down. The input resistors were good, the 74LS253 input chips were replaced. No change. Replaced the Fujitsu 74LS374 latching data from the main CPU to the sound CPU. No change. Walked down the address decoding path and replaced 2x 74LS138 and 1x 74LS139. No change. Replaced the 74LS08 at A2 to fix the board. This chip controlled the enable line on the 74LS245 latching data to/from the CPU board to the Video PCB. It was causing the LS245 to put spurious data on the main CPU bus causing the CPU to misread control inputs and causing incorrect sounds.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #145 on: December 08, 2022, 08:06:45 PM »
Model: X-Men 6 player
Symptom: Audio problems

Cleaned off excess solder blobs from edge connector and repaired the burnt +5v connection. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #146 on: December 08, 2022, 08:09:05 PM »
Model: X-Men
Symptom: No audio

Note: Board was sent in without the hybrid and with the custom and DAC taped to the PCB.

Removed 3 broken pins and desoldered 3 plated thru holes from where the hybrid was removed. Straightened multiple bent pins on the QFP custom chip and installed it on a replacement hybrid. Patched a pulled trace to the hybrid. Replaced the bad audio DAC. Replaced 6 caps in the audio section and 2 filter caps on the supply voltages. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #147 on: December 23, 2022, 01:58:23 AM »
Model: Super Space Invaders '91
No controls

Cleaned edge connector and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Konami Games
« Reply #148 on: December 28, 2022, 08:46:25 PM »
Model: TMNT
Symptom: Dead

Board had some very hot chips on it that burned my finger.

Used a thermal camera to ID shorted chips. Replaced 74ALS151 at F6, F7, G3, G4, G5, and G6. Replaced every RAM: G27, G28, F16, F22, F23, G8, and both Work RAMs. Replaced the 74LS245 at E24 and F24. No boot, but no more glowing chips. Found no clock on the 68000 CPU and its pin was shorted to +5v by 23 ohms. Replaced a bad LS23 at F9 and LS04 at H18. CPU Clock was restored and game tried to boot, but failed with RAM errors. Replaced a bad LS157 at G25 and the board then passed all self tests, booted, but had some graphics corruption. Self Test showed the Mask ROMs at H4, H6, K4, and K6 as bad. Found a shorted pin on those mask ROMs - pin 5 was stuck high and shorted to +5v by 338 ohms. Replaced failed ALS151 at F5 to finish the repair. Burned in the PCB and then played it through to the end.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Konami Games
« Reply #149 on: January 22, 2023, 04:24:42 PM »
Model: Sunset Riders
Symptom: Dead. Corrosion damage.

Patched 8 data line traces between a custom IC and video RAM.  Board would try to boot but had garbage on the screen. Reflowed another custom IC to restore connectivity to another set of RAM for 2 address lines. Patched 2 traces carrying address lines between two customs. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Konami Games
« Reply #150 on: February 27, 2023, 04:50:29 AM »
Model: X-Men 6 player
Symptom: No audio

Replaced sound hybrid and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Konami Games
« Reply #151 on: February 27, 2023, 04:55:03 AM »
Model: X-Men
Symptom: Stuck in reset

Board had an attempted replacement of the hybrid with a 3rd party module.

Low ROM was one set of pins off in its socket. Removed and reinstalled the ROM. Still no boot, stuck in reset. The hybrid module had multiple solder shorted pins on the PCB. Unplugged the hybrid module and reflowed pins on the PCB to remove shorts. Board would boot to sound chip errors. The custom chip and DAC were misregistered on their solder pads. Removed the chips, cleaned everything up, and reinstalled them on the module. Desoldered the pins on the module, cleaned the PCB / pins, and resoldered them as they had some kind of oily residue on them. Plugged the hybrid in and tested - sound chip errors during self test. Found a broken trace from pin 62 of the hybrid module to the CPU Address bus. Installed a kynar jumper and tested successfully.
« Last Edit: February 27, 2023, 05:10:46 AM by channelmaniac »
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #152 on: March 02, 2023, 12:32:54 AM »
Model: Crime Fighters
Symptom: Dead. Nothing on screen.

2018 RAMs at F14, F15, and J3 were getting finger blisteringly hot and tested bad out of circuit. Socketed and replaced them. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #153 on: March 15, 2023, 12:23:52 AM »
Model: X-Men
Symptom: Distorted sound

Note: customer installed their own hybrid replacement module

Resoldered headers to hybrid module and sockets to PCB. Reflowed the custom IC and DAC on the replacement hybrid module. Checked traces to the module and found pin 1 was not connected to +5v. Jumpered connection with Kynar wire and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Konami Games
« Reply #154 on: March 18, 2023, 01:25:39 AM »
Model: X-Men
Symptom: No sound

Replaced hybrid module with one customer supplied. Replaced 3x 1000uf@16v, 1x 10uf@16v, and 1x 470uf@16v capacitors. Replaced bad DAC. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #155 on: March 18, 2023, 01:12:55 PM »
Model: Lethal Enforcers
Symptom: Physically damaged.

Customer removed the hybrid and damaged multiple traces

Removed solder blocking several holes. Inspected board. Removed the Sound SRAM and multiple wire pin jumpers. Cleaned up PCB and installed a socket and new SRAM. Installed a missing 4.7K resistor pack. Installed new hybrid and jumpered 4 dead traces. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #156 on: March 21, 2023, 06:56:59 PM »
Model: Lethal Enforcers
Symptom: Bad audio

Replaced hybrid module with one that was customer supplied. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #157 on: April 12, 2023, 03:17:10 AM »
Model: Road Fighters
Symptom: Dead

Replaced dead Konami-1 CPU, cleaned ROM legs, and installed a coin cell holder and battery. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!channelmaniac Is an-NLG GOD!
  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #158 on: April 12, 2023, 04:23:55 AM »
Model: Road Fighters
Symptom: Dead

Cleaned up battery leakage. Replaced 2x 74LS244 chips on the data bus. Replaced corroded ROM sockets, RAM sockets, and the CPU socket. Patched a damaged power trace to the battery backed RAM. Replaced 74LS74 on the Interrupt circuit and a shorted LS253 keeping the data bus down. Installed a coin cell holder and battery. Cleaned sound ROM legs. Moved to the video PCB and removed 4 poorly installed sockets on the 2114 RAM, cleaned up the PCB area, and installed new sockets. Replaced bad 6116 SRAM at G10. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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  • Few things are better than fixing an old game...
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Re: Konami Games
« Reply #159 on: April 23, 2023, 03:06:22 PM »
Model: Time Pilot
Symptom: Dead

Replaced shorted tantalum capacitor and tested. No audio. Replaced audio amplifier IC and tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

 

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