This guy is great for troubleshooting these chassis: Mike’s Amateur Arcade Monitor Repair – YouTube
I had a couple boards that would constantly blow fuses. First get a resettable circuit breaker so you don’t go through lots of fuses. Here is what I got: NEW EATON/ HEINEMANN 2-AMP 2A KD1-2 PUSH RE-CIRK-IT PUSHBUTTON CIRCUIT BREAKER | eBay
Solder some wires with allegator clips and put in in place of the fuse while you test.
Make sure you get good Flybacks. I don’t buy those from eBay anymore instead I buy from here: You searched for k7000 flyback – Arcade Parts and Repair
You will need to replace the Flyback if it has cracks or damage. Here is a cracked flyback:
Next you will want to check all the below areas with a multimeter
| LOCATION | READING | TYPE OF TEST | HOW |
| D13 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D14 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D18 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D19 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D20 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D21 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D22 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D23 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| D24 | around .5 volts is good | Diode | Negative lead goes to stripe side of diode |
| R89 | around 3.9k ohms | Auto setting on my meter for resistors (ohms) | Black lead to one side and red lead to other side |
| R97 | around 290 ohms | Auto setting on my meter for resistors (ohms) | Black lead to one side and red lead to other side |
| R101 | around 5k ohms | Auto setting on my meter for resistors (ohms) | Black lead to one side and red lead to other side |
| R103 | around 2.7k-3k ohms | Auto setting on my meter for resistors (ohms) | This resistor is standing up. Test the very top lead and the very bottom inner lead |
| R104 | around 15 ohms | Auto setting on my meter for resistors (ohms) | Black lead to one side and red lead to other side |
| C36 | around .5 volts | Diode | This capacitor has 4 legs, and I read them diagonally |
| C38 | I am unsure what this should read but possibly around .5 volts | Diode? | Black lead to one side and red lead to other side |
| H.O.T. (Near the flyback screwed to the metal. Has 2SD1398 printed on the chip) | around .5 volts | Diode | Put the black lead on the middle pin and touch the left or right pin to get readings |
| Voltage Regulator in the corner near the fuse holder | around .5 volts | Diode | 30130: black lead to pin 3 and red lead to pin 4 3123: black lead to pin 1 and red lead to pin 4 Note: you can follow the blue and red wire to the resistor mounted vertical to get the readings too |
The above chart is a draft I am coming up with so let me know if anything is incorrect so I can update it.
For my purpose here is what I bought from https://www.arcadepartsandrepair.com/page/1/?s=k7000&post_type=product
(D1047)D18 – $3.75 (quantity of 2)BY228 3 Amp 1650 volts and has a 20000 ns reverse recovery time
(R1075)R101 – $3 (quantity of 3) 6.8K OHM 3 WATT METAL OXIDE POWER RESISTOR
(R1046)R89 – $2.75 (quantity of 1) 3.9K Ohm 5 Watt Metal Oxide Film Flameproof Resistor
(MC1002)C38 – $2.75 (quantity of 1) .39uF 250V Capacitor
(R1018)R96 – $2.75 (quantity of 3) 1.8K OHM 3 WATT METAL OXIDE POWER RESISTOR
(D1001)D19, D20, D21, D22, D23, D24 – $1.50 (quantity of 5) 1 Amp 1000 Volt. This diode can replace any of the following diodes 1N4001, 1N4002, 1N4003, 1N4004, 1N4005, 1N4006, 1N4007, A14F, 1S1887A, RM1A, D1D, D1K, 91A05, FDH444 and TVSRM1ZM
(CN1000)Flyback 1.55mm pin housing – .25 (quantity of 1)
(CN1006)1.5mm pin – $2.50 (quantity of 10)
(MC1028)C36 – $5.25 (quantity of 1) .0036uF 2000V Metalized Film Capacitor
(MC1027)C36 – $5.35 (quantity of 1) .0047uF 1600V Metalized Film Capacitor
(MC1016)C69 – $5.25 (quantity of 1) .0062uF 1600V Metalized Film Capacitor
(MT-200) – $2 (quantity of 5) Mica Transparent Insulator
K7000 Locations to check:
(R1082)R60 – $1.50 (quantity of 5) 56K OHM 1/2 WATT RESISTOR
(R1077)R102 – $3 (quantity of 3)(Wells Gardner K4900 and K4800 arcade monitors at location R504) 47 OHM 1 WATT METAL OXIDE POWER RESISTOR
(R1075)R207, R208, R209 (Same as R101) 6.8K OHM 3 WATT METAL OXIDE POWER RESISTOR
(R1074)R98, R99 – $3 (quantity of 3) 2.2K OHM 1 WATT METAL OXIDE POWER RESISTOR
(R1073)R100 – $3 (quantity of 3) 270 OHM 1 WATT METAL OXIDE POWER RESISTOR
(D1012)D13, D14, D15, D16, D17 – $2 (quanity of 1)(This diode can replace any of the following diodes 1N4933, 1N4934, 1N4935, 1N4936, 1N4937, RU-2, RU2, RU2A, RU1, RM1, RM1A) 1.5A 600V
(MC1022)C33 – $5.50 (quantity of 1) .0033uF 1600V Metalized Film Capacitor
(R1029)R90, R91, R92 – $3.25 (quanity of 3) 1.2 OHM 2 WATT METAL FILM POWER RESISTOR
(MC1010)C37 – $2.55 (quantity of 1) .15uF 250V Metalized Film Capacitor Heavy Duty
(MC1036)C51 – $1.35 (quantity of 1) 0.68uF 35V Tantalum Capacitor
(2N3904)Q1, Q2, Q3 and Q9 – $1.50 (quantity of 5) can replace the 2N4123, 2N4401, MPS-A20 and FMPS-A20
(D1000)D10 – $1.50 (quantity of 5) The 1N914B will replace the D1C, MSD6102 and 1N100 on the Wells Gardner
(R1123)R103 – $2.50 (quantity of 1) 2.7 Ohm 7 Watt Wirewound Power Resistor
(R1115)R97 – $3.50 (quantity of 3) 270 OHM 3 WATT METAL FILM POWER RESISTOR
(R1099)R104 – $2.55 (quantity of 1) 15 Ohm 5 Watt Wirewound Power Resistor
(R1100)R213 – $3.75 (quantity of 1) 0.68 Ohm 2 Watt Metal Film Flameproof Resistor
C204 – $4.5 (quantity of 10) 4.7uF 250V capacitor
(R1029)Wells Gardner K7400, K7500, U2000 and U5000 at location R310, R301, R303
(D1001)Electrohome G07 at D901, D902, D903, D904
(MC1060).0056uF 2000V Metalized Film Capacitor K7000A C36 – $6 (used on Zenith k7000A)
