If someone with a Beomaster 6000 has time and a DVM could you measure the DC voltage between pins 1 (+) and 4 or 5 (gnd) on connector P41 of the Power Supply 16 Module? If possible take the measurement with the connector on and with it off. I would like to verify that the voltage on pin 1 on a good unit is 6.5 VDC. Meanwhile, I took time today to add

I decided to mock up the Module 16 10VAC rectifier to 6.5V circuit in Electronics Multisim. It isn't a perfect simulation because the components used in the model aren't 100 percent equal to the real thing. But the simulation is pretty close to what I see on my Beomaster 6000. A picture of the simulation is below. It is confusing because the

I spent more time working with the power supply this evening and I must have read a voltage wrong earlier. As it stands now I am not getting 6.5VDC out of the Module 16 Power Supply. It is putting 9.9 VDC on its P41 Pin 1 coming off that board. So it is the problem. The circuit for the 6.5 VDC from the service manual is shown in the picture here. The

Module 16 (Power Supply) is the source of the 6.5v to the 02 Module. The 6.5v doesn't connect directly though. It is routed through the 06 Module (Motor Control). I disconnected the connector that carries the 6.5v from the 16 board to the 06 board and measure the value right at the 16 board connector (P41 pin 1). There is pretty close to 6.5v volts

02 Module - IC4 processor works !! I don't have the problem fixed yet but I have managed to see that the 02 Module will come to life. With the 6.5v line from the P2 connector disconnected (via pulling the jumper on the 02 Module), I decided to try using my DC power supply to provide 5 volts there. When I did that, the board came to life and the

I'm not sure yet but when I disconnect the P2 plug and try to measure 6.5v in its pin 1 socket I am not reading anything. However, the P2 pins 1 and 2 tie together on the 02 module board, then go through a jumper. The voltage at the jumper is the same point I measure 3.3v so I disconnect one end of the jumper so I could measure the incoming P2 signal

I received the parts today a few of each - IC6: 74LS393N, IC7 & IC9: 74LS93N and the mod IC(x): 74LS74AN Nothing to jump up and down about on solving the problem though. However, I did learn some things that I hope will eventually solve it. As a sanity check I wanted to see clocks go through the IC6 -> IC7 clocking circuit that feeds the pin

Looks like one more day...the parts weren't shipped until today. I should have just gone over to Mouser and picked them up myself.

I forgot today was a holiday so no mail service. I'll have to wait until tomorrow to try out the new timing circuit components. -Sonavor

I have the little 8002562 mod PCB out right now but one reason I removed it was because I wasn't getting any clock signal at the processor pin 15. I have ordered replacement ICs for the counters (they were pretty cheap - from less than a dollar to just over two dollars). They should arrive tomorrow and I will get the 02 module back together. Then