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Old 22nd April 2011, 10:05 AM   #1491
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nazirdi
please double check this traces
i try to figure but i can only assume maybe i was wrong.
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Old 22nd April 2011, 10:30 AM   #1492
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Quote:
Originally Posted by engel dela pena View Post
nazirdi
please double check this traces
i try to figure but i can only assume maybe i was wrong.
hi engel dela pen
i removed all power trans and checked 2 trans burned.
i checked the traces its fine.
may be b649 is fake i think.
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Old 22nd April 2011, 11:26 AM   #1493
Mamak is offline Mamak  Malaysia
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excelent
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Old 22nd April 2011, 05:56 PM   #1494
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thank's Mr. Miles and Mr.Coolet
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Old 22nd April 2011, 06:59 PM   #1495
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Originally Posted by yosie48f View Post
thank's Mr. Miles and Mr.Coolet
hey man is this h900 or b500? wrong thread.
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Old 23rd April 2011, 08:43 AM   #1496
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hi apex sir .
i bought a new transformer for b500. after rectifies it gives 80.0.80vdc .can i use 2.2k resistor for r24,25 or i have to increase the value of resistors? any other changes.
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Old 23rd April 2011, 01:30 PM   #1497
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Originally Posted by apexaudio View Post
This is recomended protect.
Sorry mr mile ... for the size of Protec pcb layout?
thanks
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Old 23rd April 2011, 01:36 PM   #1498
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Quote:
Originally Posted by nazirdigi View Post
hi apex sir .
i bought a new transformer for b500. after rectifies it gives 80.0.80vdc .can i use 2.2k resistor for r24,25 or i have to increase the value of resistors? any other changes.
2k2/2W is OK for R24,25
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Old 23rd April 2011, 01:41 PM   #1499
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Originally Posted by ariyanto View Post
Sorry mr mile ... for the size of Protec pcb layout?
thanks
80x75mm
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Old 23rd April 2011, 05:08 PM   #1500
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apex sir thanks for ur reply.
without power transistors can i give dc 80v to check b500.
what are the main places to check the voltages.
dc offset below 100mv. is it ok?
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