bhuskins
Super Member
I did the first test for control circuit board 1 which requires a jumper on TP1 jumped over to J605 which is directly below it on the board. Readings are taken from GY and VI for AC voltage off of the capacitor board. I get the second type of result described in the manual where the observed AC voltage is proportional to the line AC voltage. At 123VAC line the reading at the test point(s) is .33VAC and it should be about 5.5VAC
So the manual says I have a shorted SCR, Triac or Control IC.
Here's all of those parts...
SCR601 .3A SFOR3G42 >> ???
SCR602 .5A SMOR5G42 >> ???
SCR603 16A AC16DGM-L >> ???
TR601 2SA949 >> KSA1220
TR602 2SA970 >> KSA992
TR603 2SA970 >> KSA992
TR604 2SC1815 >> KSC1815
TR605 2SC2240 >> KSC1845
TR606 TLP508 Photo Coupler which looks to be transistor and diode in a combined package...I checked the pin outs with my meter and it looks to be OK with a basic diode and transistor test.
IC601 IG04080 which I assume can only be replaced with an exact like item?
Any thoughts on which one(s)? Or, what I can use for the parts I haven't identified a sub for?
So the manual says I have a shorted SCR, Triac or Control IC.
Here's all of those parts...
SCR601 .3A SFOR3G42 >> ???
SCR602 .5A SMOR5G42 >> ???
SCR603 16A AC16DGM-L >> ???
TR601 2SA949 >> KSA1220
TR602 2SA970 >> KSA992
TR603 2SA970 >> KSA992
TR604 2SC1815 >> KSC1815
TR605 2SC2240 >> KSC1845
TR606 TLP508 Photo Coupler which looks to be transistor and diode in a combined package...I checked the pin outs with my meter and it looks to be OK with a basic diode and transistor test.
IC601 IG04080 which I assume can only be replaced with an exact like item?
Any thoughts on which one(s)? Or, what I can use for the parts I haven't identified a sub for?