| ehsjr <ehsjr@verizon.net>: Feb 11 01:03PM -0500 On 2/11/2024 3:16 AM, Bob F wrote: > PC board #EL1345526 > plastic case labeled 134847902 > Online search brings up 137007000NH as the assembly. The K2759U is a 275 volt MOV (aka VDR - Voltage Dependent Resistor). The full part number is LIKELY S10k275. A probable(*) replacement part is Digikey 495-1433-ND. * = I say probable because that is what I would try if it were my machine - based only on the information you posted, which includes (on my part) the assumption that the burned VDR is identical to the other VDRs. Of course with a schematic or reverse engineering we'd be in much better shape to make a firm diagnosis, but lacking that you have to go with what is likely but not proven. As you undoubtedly know (but others might not) you have to replace those bulging caps, too. Good luck with the repair! Ed |
| Bob F <bobnospam@gmail.com>: Feb 11 11:18AM -0800 On 2/11/2024 12:16 AM, Bob F wrote: > There are 3 other VDRs on the board which are near each other but not > near VDR4. These are labeled K2759U, but I have not found a proper > datasheet for those. 07 K2759u 07 21 is the full label on those 3. |
| Bob F <bobnospam@gmail.com>: Feb 11 11:45AM -0800 On 2/11/2024 10:03 AM, ehsjr wrote: > replace those bulging caps, too. > Good luck with the repair! > Ed I really appreciate this response. Now I have something to work with. |
| ehsjr <ehsjr@verizon.net>: Feb 11 01:09PM -0500 > squirrel cage and that may be the source of the whine. > According to the owner, Kaussmann is defunct. Any ideas about repair? > Thanks, ... P. That missing blade might be correct. It could be that there is a set screw holding the squirrel cage assembly to the fan motor shaft accessible where (and because) the blade is missing. I'm speculating, not sure. Ed |
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