Hi Folks,
I need help, my amp microcomputer PD5443 fail. No datasheet online, no info. I can order new one but there is no firmware inside + I dont know which programmer can reprogram it. So I decide rebuild amp without microcomputer. I dont care Impute selection option / Loudness function / Direct option. At the moment I stuck on speaker protection mode. I wanna save this function. Please look picture. I need help I need add some parts to get it work, transistor some resistors.. So anyone can make me wiring diagram??
Amp services manual here:
http://www.kallhovde.com/pioneer/tricomp/Audio/A/A-207R_307R_RRV1912.pdf
I need help, my amp microcomputer PD5443 fail. No datasheet online, no info. I can order new one but there is no firmware inside + I dont know which programmer can reprogram it. So I decide rebuild amp without microcomputer. I dont care Impute selection option / Loudness function / Direct option. At the moment I stuck on speaker protection mode. I wanna save this function. Please look picture. I need help I need add some parts to get it work, transistor some resistors.. So anyone can make me wiring diagram??
Amp services manual here:
http://www.kallhovde.com/pioneer/tricomp/Audio/A/A-207R_307R_RRV1912.pdf
I had one of these in for repair, a few years ago and the supply to the control chip was missing. Nothing more.
Why not repair it.
Check for power on pin 22 of IC601. Check the oscillator pins 19 & 20. If you have an oscillator, it is working. Force a reset on pin 25 and check you have a change of state on pin 34.
Why not repair it.
Check for power on pin 22 of IC601. Check the oscillator pins 19 & 20. If you have an oscillator, it is working. Force a reset on pin 25 and check you have a change of state on pin 34.
checked IC dead. vcc ok. pin 38, 37,1 short to ground. story was that opt board GNDD touched transformer ac line 30v. . Anyway I have an idea upgrade amp. I have bluetooth usb lcd 3inch board, I will cut on panel hole and fit screen on amp panel in that place where is input selection. so my problem is protection... I can switch manualy relay +5v to q343 but I want protection... any ideas how figure out??
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