[Ary]

Sorry for the late reply. Over the past few days I’ve been checking the voltages so I started by measuring the resistors on PCB1 connected to the speed sensor. I found that resistors R46 and R47 both showed only 3 volts. I believe this should be 15v. So I started measuring 0TR1,  I measured 22 volts going in and 0.03 out on the collector (tip32 middle pin). Then I noticed that 0IC1 starts overheating to the point of not being able to touch it. (desoldering it from the board showed the same output on tip31) Other things I measured were the whole path from P4-6 to -> C44 and from P4-8  -> R46 that leads to P3-4 and on the other end to 1Ic1 P12 and TR28 everything in this path seems to be working. I do have a question about resistor 102 and 49. Both seem to be the 1 million ohm rating and I’m not sure how to test these. With my multimeter set at 200k r49 reads 38.2 and r102 reads 104. Maybe somebody can tell me if I’m doing this correctly or if I’m being stupid? Then I checked the path from fuse 1 (on PCB1) that leads to P2-5 and on the other end leads to R75 -> TR17E. I notice that R75 only reads 1.9k in resistance. Could this be my problem? I know a non working TIP31 will not give me the 15v circuit but I feel like it was working before and it has blown so i feel like something else is seriously wrong

I do notice that multiple threads on this forum go dead when the problem states the 0.0.0.0 problem? Not sure why that is?

Still trying to figure it out. Very grateful for anyone who lands a thought on this.

Ary

[Ary]

Good evening Martin and thank you for your response. Ive gone and checked the continuity from the sensor to pin 40 on the cpu and where it splits off from Ic1 to the collector of TR9 and P5 pin 1. All seems to check out. Tomorrow I will go an check some voltages across that path. what I can tell is that right now im seeing 0.6V across the on red and green to ground, but that might not mean anything I do not know. Ive been working on this for 3 weeks and learning about this amazing machine  as I go along. I do not own an scope as of yet. I did replace all the capacitors in the kit. I hope I didn’t complicate things more by hoping the capacitors change was gonna fix all my issues. 🙂 And shamingly so i have a strong suspicion the problem of having  +24 on c29 and not –  is due to my error with the meter. I guess that is good news. I also forgot to note that the display reads 0.0.0.0

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