I have a hayward h150 natural gas heater. I started my filter this year after the winter and the heater appeared fine. It showed the temp on the display panel. I went to clean out the inside of the heater, as mice had brought some bird seed shells into it. After blowing out the heater with compressed air, the panel read SB and the service light was on. I called Hayward tech support and they said the control panel needed to be replaced. I ordered one and when I went to replace it, I noticed the display was now blank. I tested the power to the display, at it is getting power. I called Hayward back and they told me I need to order a control panel board now. The panel itself was only $60, but the circuit board is $150. I am afraid if I order one, what ever caused the first one to go bad, will just cause the same problem. Any ideas? I have read about others who are having the same issue. I even went as far as to test some of the resistors and the small 1/4 watt resistor label r55, seems to be bad. Thanks!