Daniel

[Daniel]

Hello.

Pop quiz 1 = 240 (subtracting a negative is the same as addition)

Pop quiz 2 – You would not measure a difference. The 120 volts coming from L2 would be present at both points, so the difference would be zero.

Bonus – I think it was called half splitting, but I remember the technique from the core. I think it would be good for me to review though.

Sorry to keep you, feel free to move on. I think I might be overthinking this and confusing myself. In this case, the element is bad. So I can’t measure L2 on both sides of the element. This is what I mean, whether or not it is correct….

The element is open, whether it is the element or the connections etc., current can’t pass through it.

If I place a probe at P2-6 and a probe at P1-1:

Scenario 1: the board has killed power to P1-1 because it does not sense the bake element, but it has not killed power to P2-6 because L2 is present for the upper right convection element (we assume). As long as P1-1 and the connecting wires are still intact, would I still measure 120V, because this is the difference between the V being supplied by L2 wrt L1 (the open bake element is not allowing current from L2 to reach the other side)?

Scenario 2: the board hasn’t killed power, and I would read 240V regardless of the open status of the element because the difference between these two points, due to being out of phase, is 240V.

Sorry to go on. I realize this isn’t very relevant for troubleshooting and fixing this oven, but now I worry I might have misunderstood some core concepts. Much appreciated.

[Daniel]

Hello. Thank you for the thorough answers.

1. I guess if the board might be killing power to the element anyway, checking voltage could just confuse me because i would see no voltage and not understand why. Or I guess I might see 120volts? Because L2 would still be active (bc the convection element is working) but if the board killed power to the bake element, p1-1 would be off?

Voltage looks like p1-1 to p2-6.

2. Parallel. Thank you. I thought this must be the case but the schematics we have been looking at made that more clear with the lines. Rather than the usual “T” intersection, this has it leading to the convection and then away so I wanted to make sure this wasn’t something new.

3. Great. Thank you. I was worried I was misunderstanding something. Much appreciated.

[Daniel]

Clarification.

1. Not “bad element” etc. but an open in that circuit.

2. I guess with the schematic, the two elements are usually drawn as parallel. So that the bake element could get L2 but the convection element not get L2 because of an open there etc? Is that a parallel circuit, or are they in series as far as L2 is concerned? I just haven’t seen it drawn like this. On the wiring diagram.

Sorry for the questions.

[Daniel]

Thanks a lot, I really appreciate it. I look forward to watching them. Knowing that the assembling, disassembling, and more physical processes are outlined in the service manual, as well as the easy part, is reassuring.

Thank you!

[Daniel]

Hello. Thank you.

I do have appliantology. So the actual steps to the physical processes, like accessing the control board and replacing a TCO, are the easy parts and directions are found in the service manual. That’s a relief. I’ve understood and enjoyed the core course and range course, but couldn’t help but feel underprepared because I haven’t seen the actual process of repairing something.

Thanks again.

[Daniel]

Thank you!

[Author]

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