Question about Welding Tools
How much will it cost to replace main circuit board?
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Posted on Jan 02, 2017
We all appear to be in the same mess --Thanx Haier
This product says its Amana, but rest assured it is an Haier
The problem is most likely with the engineering design of the board. Im not an electrical engineer so be careful litning to me to closely :) There is only a half bridge rectifier on this board and 2 zener diodes that clamp down on the voltage. My guess on yours is the Zeners have been shorted and no longer clamping voltage down to aroun 24 volts for the low side of the board. I spoke with Haier and they have no schematics that state the zener specifications. They also said there was a 6 month backorder on ordering a new board. Oh and by the way if you want to order a new board and wait 6 months for the backorder it would cost you 75.00. All this jsut to repeat the problem again, because of bad design. O well ----- I wish products were not made better, so I wouldnt have to fill guilty about putting this in the landfills.
Posted on Feb 27, 2009
The replacement of a board is no TOO hard, just DRAW a Diagram of ALL connections when you take the "Old" one out. NEVER work on the machine live Duh, also always wait a bit to allow capacitors to discharge, or use a shorting stick, if in a hurry. Anyhow, make sure you keep all fixtures together note down all connections and label them with little stickers, With any other information on the stickers as need be. I always do this as one never remembers whats what after a bit, anyway. Just be methodical, and you will prevail.
Posted on Feb 25, 2010
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