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12th November 2006, 08:22 AM
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#1 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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i have some pics of unwell pioneer
Here are some pics of the pioneer there are parts missing out of the board which i have done to test,i took all the relays out because the rapid clicking got annoying after a while.
The 2 grey resistors are okay,1.2 k and 1.8 k these drop the volts from 39 vdc to 30 vdc ,+ and - ,then they are drop again for preamp stages through the psu at the side of the 2 15000mf psu caps,preamp rails being +16vdc and - 12.5vdc. there has been a repair on this amp before there are 4 teapo caps 10mf 100v which have been put in a zener diode by the side of the left psu cap was bust im guessing it is 33v because there is another on - rail. All of these parts are in the supply to the left of the main psu caps,apologies for rubbish pics. I really need some help on this one as soon as you press the direct button on front panel amp stays on............. Any help would be fantastic. |
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12th November 2006, 09:07 AM
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#2 |
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diyAudio Member
Join Date: Apr 2003
Location: Copenhagen, Denmark
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If you post the pics it will be a lot easier
__________________
Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com |
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12th November 2006, 09:34 AM
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#3 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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pioneer pics
this time maybe
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12th November 2006, 09:38 AM
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#4 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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more pics
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12th November 2006, 09:40 AM
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#5 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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12th November 2006, 09:42 AM
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#6 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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12th November 2006, 09:44 AM
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#7 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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12th November 2006, 10:00 AM
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#9 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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more pics of pioneer with parts refitted
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12th November 2006, 10:01 AM
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#10 |
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diyAudio Member
Join Date: Nov 2005
Location: suffolk
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