Re: Transformer substitution - Sanyo DP42849-01
OK, laser temp probe arrived today.
Good board with stock transformer, after about an hour, secondaries were about 163°.
Board with rebuilt transformer, 190-199°.
And those are open air readings. I suppose they would be hotter if enclosed in the TV. Definitely not safe. These will not be sold. I have one more awaiting rebuild and I'm going to try a larger gauge wire. If that makes a difference, I will attempt to disassemble the ones I rebuilt already. To my advantage, I know what epoxy I used and have some left. So, I'll make some samples and see what solvents will work best to break it down. At least I'm learning from doing this.
OK, laser temp probe arrived today.
Good board with stock transformer, after about an hour, secondaries were about 163°.
Board with rebuilt transformer, 190-199°.
And those are open air readings. I suppose they would be hotter if enclosed in the TV. Definitely not safe. These will not be sold. I have one more awaiting rebuild and I'm going to try a larger gauge wire. If that makes a difference, I will attempt to disassemble the ones I rebuilt already. To my advantage, I know what epoxy I used and have some left. So, I'll make some samples and see what solvents will work best to break it down. At least I'm learning from doing this.
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