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Author Topic: Shop Gear Repairs  (Read 23314 times)

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Offline channelmaniac

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Re: Shop Gear Repairs
« Reply #40 on: October 30, 2016, 08:37:11 PM »
Model: Elenco XP-15 power supply
Symptom: Dead. Missing parts.

Replaced cut power cord. Resoldered connections to the output terminals and tightened the ground terminal. Fixed broken traces on C3 and on the adjustment potentiometer. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Shop Gear Repairs
« Reply #41 on: October 30, 2016, 08:38:03 PM »
Model: Elenco XP-15 power supply
Symptom: Dead.

Replaced bad positive output terminal. Fixed multiple bad solder joints. Tested.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

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Re: Shop Gear Repairs
« Reply #42 on: October 30, 2016, 08:38:55 PM »
Model: Elenco XP-15 power supply
Symptom: Dead.

Resoldered LM317 voltage regulator and fixed 2 broken pads on the adjustment potentiometer. 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: Shop Gear Repairs
« Reply #43 on: October 30, 2016, 08:40:02 PM »
Model: Elenco XP-15 power supply
Symptom: Dead. Rattles. Power LED not flush with case.

Reattached the heatsink to the LM317 voltage regulator. Fixed multiple bad solder joints and replaced the power LED. 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: Shop Gear Repairs
« Reply #44 on: March 03, 2017, 09:51:52 PM »
Model: Fluke 9000A-6800 Pod
Symptom: Convert to 6502 Pod

Followed the instructions downloaded from the KLOV forums and cut multiple traces and soldered multiple jumper wires on the top and bottom boards of the pod. Replaced the 6800 CPU with a 6502A and the program ROM with one that had the 6502A pod image on it. 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: Shop Gear Repairs
« Reply #45 on: March 03, 2017, 09:53:59 PM »
Model: Fluke 9000A-6800 Pod
Symptom: Dead. Attempted conversion by a 3rd party

Followed the instructions downloaded from the KLOV forums and verified the cut traces and patched jumpers. Installed a missing 6502A CPU and tested. Pod failed with a timeout error. Replaced the 6532A IC and retested to the same error. Replaced the program ROM with a freshly programmed TMS2516 EPROM that had the 6502A pod image on it. Tested successfully.
[/quote]
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Shop Gear Repairs
« Reply #46 on: March 23, 2017, 09:43:11 PM »
Model: Fluke 9000A-8080 pod
Symptom: Fails self test

Pod cable had attempted repairs done to it and was missing 3 pins. Crimped a new replacement ribbon cable assembly and installed it but unit would still fail self tests with a different error. Disassembled and fixed a bent contact on the ZIF socket and retested successfully.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Shop Gear Repairs
« Reply #47 on: April 01, 2017, 09:28:24 PM »
Model: Fluke 9000A-6809 pod
Symptom: Fails self test

Resoldered cracked joints on the ribbon cable connectors on the interface board then cleaned the IDP header pins and the self-test ZIF socket. Tested with 6809 and 6809E CPUs.
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: Shop Gear Repairs
« Reply #48 on: April 09, 2017, 07:02:36 PM »
Model: Kurz Kasch arcade tester
Symptom: Horrible hum and sizzling noises

Replaced an internally shorted 8,000uf @15v capacitor and tested the rectifier diodes to make sure the weren't shorted. Removed the internal extender for the C board socket and cleaned the edge connector and internal socket of corrosion. Reassembled and tested by repairing a Space Invaders boardset with it.
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: Shop Gear Repairs
« Reply #49 on: July 12, 2017, 11:17:21 PM »
Model: Craftsman Rotary Tool 572610030
Symptom: Will not spin

Motor is spinning but the tool chuck is not.

Replaced the shattered coupling, part # 2615294309, and tested. The old coupling had deteriorated from age, became brittle, and crumbled.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

Offline channelmaniac

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Re: Shop Gear Repairs
« Reply #50 on: July 16, 2017, 06:42:49 PM »
Model: OS-5060A Dual Trace 60MHz Oscilloscope
Symptom: Overbright screen. Cannot adjust focus properly

Replaced leaking diode at D645 and tested scope successfully. Original diode read 385K one direction and 780K in the other.
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: Shop Gear Repairs
« Reply #51 on: January 14, 2018, 05:38:36 PM »
Model: Scanmill CNC mill
Symptom: Dead

The mill did not come with power on keys. Replaced the power key switch and powered the mll up. The PC that came with it did not have software installed to run the mill. Removed the CPU board from the control board and set it aside. Connected a Parallel port breakout board to the controller board and converted the mill to run with Mach3 software. Calibrated movements of the X, Y, and Z axis then tested by milling the sample roadrunner file in Mach3
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: Shop Gear Repairs
« Reply #52 on: May 22, 2018, 03:04:04 PM »
Model: Kurz Kasch arcade tester
Symptom: Blows fuses

A shorted tantalum capacitor on a Space Invaders boardset caused the fuse to blow. After that the fuse would blow again. Replaced 2 1N4004 diodes on the 295A card, replaced the fuse again, 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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  • Few things are better than fixing an old game...
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Re: Shop Gear Repairs
« Reply #53 on: April 02, 2019, 07:23:01 PM »
Model: PS-1502D adjustable power supply
Symptom: Cannot adjust

Coarse adjustment pot had its shaft snapped off at the body and one wire on the back side was floating in the air. Sourced a replacement part - a small split shaft linear taper 5k pot - in an electronics surplus store in California, installed it, and tested. Voltage output was fixed and not adjusting. Repositioned the floating wire to the center terminal of the pot after referencing the LM723 voltage regulator data sheet and successfully tested the adjustable output.
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: Shop Gear Repairs
« Reply #54 on: June 04, 2019, 09:44:22 PM »
Model: HP 10529a Logic Analyzer
Symptom: Test and repair

Used the test card and discovered 2 dead channels from the clip and cable. Disassembled unit and reattached 2 broken wires. Reassembled and tested. Checked the universal card for shorted diodes. It was good, but the DPDT switch was broken. Walked owner through how to properly configure the individual IC test cards and will install the DPDT switch after he acquires a replacement.
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: Shop Gear Repairs
« Reply #55 on: July 01, 2019, 09:42:43 PM »
Model: DT-1 DRAM Bank Tester
Symptom: Missing Device Key

Unit was purchased as-is without power supply or the device key. Luckily I own another one of these.

Tester recognized and tested 256K x 4 DRAMs but would not recognize 1M x 1. Reverse engineered the device key from one I owned, built a duplicate, installed it, and tested. Unit would successfully test 256K x 1, 1M x 1, and 256K x 4 DRAMs.
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: Shop Gear Repairs
« Reply #56 on: September 30, 2019, 08:25:10 PM »
Model: Kingwin USB 3.0 to NGFF M.2 SATA Adapter
Symptom: Computer will not recognize drive

USB power/data connector broke loose from the PCB. Reflowed the connector pins and housing to board connections 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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  • Few things are better than fixing an old game...
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Re: Shop Gear Repairs
« Reply #57 on: October 28, 2019, 07:23:20 PM »
Model: Data I/O Series 29A
Symptom: Dead keys

Unit had dead keys and keys that bounced. Replaced 9 keyswitches 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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  • Few things are better than fixing an old game...
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Re: Shop Gear Repairs
« Reply #58 on: April 12, 2020, 11:24:42 PM »
Model: Sencore TF26
Symptom: Unresponsive

This had a lot of issues. The original test leads had the plasticizer problem and got green goo everywhere, and I mean everywhere. I had to clean the thing inside and out and throw the test leads away then had to clean push button switches 4, 5, and 6 because the plasticizer got in there too!

After that was to disassemble, clean, and lube the 2 slide switches. Next, pulled the PCB and fixed the cracked solder joints on the connectors. then the stuck meter was disassembled and cleaned loose ferrite powder from the mechanism then reassembled it.

Now it worked but had some odd behavior. The manual said to connect all three leads together and push each switch and you'll see the meter go full scale. That worked for every switch except 6. Disassembled it again and pulled the small PCB out for switches 4, 5, and 6. Retested all the switches and they were fine. Found a broken trace where the trace met the pad for the Red test lead's connection to switch 6. Fixed that and reassembled an almost fully working tester.

It needs a new speaker now, but it's an oddball size.
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: Shop Gear Repairs
« Reply #59 on: June 13, 2020, 09:00:59 PM »
Model: SG1638N Function Generator / Counter
Symptom: Intermittent output and low output voltage

Unit had attempted repair issues.

Replaced 3 poorly installed and 1 incorrect voltage regulator - a 7815 was installed where a 7915 should have been. Replaced 2 burned 2N3904 and 1 burned 2N3906 SMT transistors. Replaced 1 burned 20 ohm and 2 heat damaged 100 ohm SMT resistors on one side of the output. Tested. Voltage was up to 5.4 peak to peak from 2.4, but still not correct, and newly installed parts were getting hot. Replaced 2 shorted 2N3096 and 1 shorted 2N3904 SMT transistors on the complementary side of the output. Tested unit. Output voltage was correct at 24v peak to peak and components remained cool.
I have too many hobbies! Electronics, gunsmithing, Miatas, arcade games, metal detecting, etc...

http://www.arcadecomponents.com

 

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