Re: Treadmill hit with power surge
D5 is good. I have ordered STR G5551 and will update when I test it.
xTomtom
New Member
Last Activity: 06-14-2023, 03:28 PM
Joined: 05-09-2023
Location: Shinnston, WV
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Re: Treadmill hit with power surge
Can anyone identify that transformer?Leave a comment:
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Re: Treadmill hit with power surge
The number for the part attached to the heat sink is STR G5551. The “u4” device is MOC3052-A.Leave a comment:
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Re: Treadmill hit with power surge
Poking around with it tonight I found that this transformer (I think that's what it is) had no voltage coming out on the secondary side and looked kind of melted on the underside. I couldn't see until I got it unsoldered. Going to try to identify the part and see if I can find a replacement....Leave a comment:
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Re: Treadmill hit with power surge
Sorry, maybe I phrased my statement wrong. With reference to ground, the positive DC leg of the bridge rectifier was approx +80 VDC. The negative DC leg of the bridge rectifier was approx -80 VDC. Measured across the DC terminals of the bridge rectifier, my total voltage is approx 170 VDC. I don’t think the problem is there unless I am misunderstanding and there needs to be ~160 VDC off of each leg with reference to ground.Leave a comment:
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Re: Treadmill hit with power surge
I checked DC leaving bridge rectifier, roughly around 80V on both the + and - legs. I also checked every resistor on the board and resistance matched what the bands on the resistors said. Any other ideas?Leave a comment:
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Treadmill hit with power surge
Hi everyone,
Recently I acquired a treadmill that was hit by a power surge (I assume). On the control board, there was a varistor that was blown apart and two traces that were partially blown out. I replaced the varistor (to my knowledge it is a matching one) and wired back where the traces were with some 22 awg solid copper wire. When I went to power it on, still nothing. On a quick inspection with my meter, I was getting incoming voltage on the AC in terminal.
The board is a MC2100LS-30 treadmill controller.
Visibly, there are no other problems.... -
Re: New Members - please post your introductions here
Hello! I am here to get help repairing a treadmill that was hit by a power surge.Leave a comment:
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