The target reset coil and the sequence reset coil are on the 110/120 volt side in North America. In Europe those coils should be on the 220/230 volt side of the transformer. If both are not resetting, then I would look at the U relay switch with the brown wire and yellow wire. Also, check score motor switch 4B - red wire and brown wire. Make sure these switches are clean and adjusted properly... And check the two fuses in those circuits to make sure they are good...

First thing to look at is the fuse which resides adjacent to the drop target bank on the bottom side of the playfield. It is a slow blow fuse.

Being a single reset coil it will have only one fuse.

Most likely it's the switch on the (G) 5000 Point and Target Bank Reset relay.

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Documentation for all Gottlieb machines is widely available. Unfortunately, the majority of sources for Gottlieb manuals and schematics are from retail sources where you would have to buy the manuals and schematics... I prefer to trade for manuals and schematics. I'm sure there are people here on Pinside that have the manual and schematic for Surf Champ. I bet they would trade for other documentation...

I'd have a look at the "gateway" switches that can send power to the target bank reset coil and the sequence bank reset coil at the same time. First look at P relay switch with the yellow wire and orange wire, and the S relay switch with the yellow wire and orange wire. Make sure these switches are clean and adjusted properly. Then check any switches that send power to the P relay coil like the trough switch with the brown/white wire and brown/black wire. Make sure the trough switch is clean and opening/closing correctly...

We'll need to start from the beginning - player walks up to the machine and presses the start/credit button... When the start/credit button is pressed, it actuates the S relay and it starts the score motor running. This will cause score motor switch 4B in the third position to close, and this will send power to the target bank reset circuit and the sequence bank reset circuit. At this point U relay is still energized and a switch on U relay will continue to send power to the target bank reset circuit and the sequence bank reset circuit. After this, AX relay actuates, but U relay will de-energize when AX relay operates...

So, you push the start/credit button, score motor starts running, target bank and sequence bank reset, and the score reels start to reset. Looking at this operating cycle, it seems like the AX relay switches are operating too soon and this causes the U relay switch to open and it prevents power from getting to both reset banks.

I would take a look at the AX relay to see how the switches are adjusted. This might be a "timing" issue where the closed switches are opening too soon. When I say timing, I'm talking about milliseconds between the operation of each relay and switch. On the AX relay look at the switch with the green/white wire and the red/white wire and see if you can experiment with the adjustment of the switch. Also, check the tension spring on the relay...

When you start a game power goes through a start relay switch and power continues to the sequence bank reset coil and to a G relay switch. Then G relay switch sends power to the target bank reset coil. If only the sequence bank is resetting during the start of a game, then you'll need to look at the G relay switch with the blue/orange wire. When you start the game, is this G relay switch open or closed?

A note on operation: the target bank reset coil will always energize and reset the target assembly at the start of a game whether or not the targets are up or down. If all the targets are up, the target assembly will still be reset.

Also, the target bank reset coil is in a circuit that includes coils and switches on the main cabinet and the playfield. Check the playfield Jones plugs that plug into the main board. Unplug the playfield Jones plugs from the main board, make sure they are clean, and then reseat the Jones plugs and make sure they are fully plugged into the main board...

Let's try to troubleshoot the issue during the start of a game:

The switch on G relay is a make/break switch (two switch stack), so if the coil is energized one switch will be closed and one will be open. Then the opposite is true when there is no power to the G relay coil. So, we'll need to know if the switch with the blue wire and orange wire on the G relay is open or closed when the machine goes through the reset process.

If we look at the schematic, it shows the switch with the blue wire and orange wire on the G relay is normally closed when the machine is powered off. And this is what we want - at the start of a game, the switch with the blue wire and orange wire on the G relay should be closed and there should be no power to the G relay coil. If you're saying there is no power to the G relay during the start of a game, then the switch with the blue wire and orange wire should be in the correct "closed" position.

If that switch is closed, you'll need to clean the switch again and adjust it. Sometimes you need to "scrub" the switch with a Flex stone or a paper finger nail file to get the switch contacts really clean. If you have a multi-meter, you can measure to see if you're getting any voltage at that switch...

I wouldn't recommend adding any wires to the machine, but you can always use some temporary jumper wires to get power to the G relay switch if needed for troubleshooting purposes...

Hi
I did not read all posts --- so I may not understand the problem - I believe to read: The Target Bank does reset during play - playing good - the G-Relay pulls-in.
Unfortunately the Target Bank does not reset when starting a new game - does not reset when kicking out a new ball to the shooter-alley --- I hope that "this my assumption" is the problem in the pin.

See the snippet of schematics HowardR showed in post-5 --- the "green line connection works: When the G-Relay throws the 3-bladed Make-and-Brake-Switch.
For the problem I would investigate on "Wire-color-orange on P- and S- and G-Relay" - I would investigate on "Wire-color-yellow on P- and S-Relay. Greetings Rolf

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The path of power through the G relay is different during start up and between say during gameplay with ball 1. Right now we're trying to troubleshoot why the target assembly does not reset during the reset process when starting a new game. In this case, we wouldn't need the G relay coil to be working at the start of a game in order to get power to the target reset bank coil...

Hi Lambecka
the G-Relay does actuate as it should / must. This is fine.
When the G-Relay pulls and the three-bladed-Switch is moved: Nice - You have connection along "my green line". This is fine.

We do not know: When the G-Relay is not pulling and so the switch is "as shown in the snippet" --- do You have connection through ?
We do not know: Has a wire-color-in-the-pin-color-orange broken-off a solder-lug - somewhere.
We do not know: Has a wire-color-in-the-pin-color-yellow broken-off a solder-lug - somewhere. Greetings Rolf