The sound & game play is 100% working, just no monitor/ picture.
Things I've observed:
-Monitor neck has the orange glow
-All fuses at power supply except at F6 check OK
-Both LEDs on the LV2000 light up
-Spot killer LED doesn't light up at all--even when 1st powering up the Tempest
(this LED should at least -flash/ flicker for a sec or two upon start-up, right?)
-F100 fuse location voltage reading: 25.00 volts
-F101 fuse location voltage reading: 25.00 volts
-No voltage readings at F600 & F700 fuse positions
-Voltage readings on the two black wires within the main wire harness for monitor are 25.20 volts
-Game will go into Test Mode, but still no picture/ video
-LED on both the main PCB & AUX boards are on
---
I swapped out the two transistors that are off the wire harness right near the LV2000 location and powered on the Tempest, to no avail. Still same the exact same state--playing blind.
---
Using a DMM, I get no voltage output/ reading on either side of the fuse holder at the F6 fuse location on the power supply.
-Could someone tell me what the F6 fuse position powers/ does and what would cause it to have no voltage output?
There's also no voltage readings at F600 & F700 fuse positions on the deflection board. What would not allow for no voltage there and if there was, what voltage reading am I looking for?
I also noticed that there's no LED on the HV cage/ PCB. Is this something that Atari added to the design later on as a running change/ update?
---
Updates/ fixes I've done over the last 2 years (or less)
*ArcadeCup work done to all 3 monitor boards (with LV2000 installed)
*New "big Cap" on power supply (Bob Roberts)
*Main PCB, Aux PCB, and power regulator PCB boards sent for repair work to two reputable repair facilities. (Electron Forge & (also tested on another Tempest game and the boards all work 100%)
*Replaced full wire harness
*Monitor transistors replaced (all 6)
*Reseated all wire harness and wires within the connectors several times
--
Any ideas/ suggestions?
Thanks everyone....
Things I've observed:
-Monitor neck has the orange glow
-All fuses at power supply except at F6 check OK
-Both LEDs on the LV2000 light up
-Spot killer LED doesn't light up at all--even when 1st powering up the Tempest
(this LED should at least -flash/ flicker for a sec or two upon start-up, right?)
-F100 fuse location voltage reading: 25.00 volts
-F101 fuse location voltage reading: 25.00 volts
-No voltage readings at F600 & F700 fuse positions
-Voltage readings on the two black wires within the main wire harness for monitor are 25.20 volts
-Game will go into Test Mode, but still no picture/ video
-LED on both the main PCB & AUX boards are on
---
I swapped out the two transistors that are off the wire harness right near the LV2000 location and powered on the Tempest, to no avail. Still same the exact same state--playing blind.
---
Using a DMM, I get no voltage output/ reading on either side of the fuse holder at the F6 fuse location on the power supply.
-Could someone tell me what the F6 fuse position powers/ does and what would cause it to have no voltage output?
There's also no voltage readings at F600 & F700 fuse positions on the deflection board. What would not allow for no voltage there and if there was, what voltage reading am I looking for?
I also noticed that there's no LED on the HV cage/ PCB. Is this something that Atari added to the design later on as a running change/ update?
---
Updates/ fixes I've done over the last 2 years (or less)
*ArcadeCup work done to all 3 monitor boards (with LV2000 installed)
*New "big Cap" on power supply (Bob Roberts)
*Main PCB, Aux PCB, and power regulator PCB boards sent for repair work to two reputable repair facilities. (Electron Forge & (also tested on another Tempest game and the boards all work 100%)
*Replaced full wire harness
*Monitor transistors replaced (all 6)
*Reseated all wire harness and wires within the connectors several times
--
Any ideas/ suggestions?
Thanks everyone....

