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Old 2nd November 2013, 06:47 AM   #2711
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Quote:
Originally Posted by eit View Post
I see it my mje 15033/15032 having no insulator and then my dc offset is -6mv but having distorted soind please somebody there who can help? Sir apex help me,

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how much your rail voltage??? how much voltage u get in r24 and 25?(it must be 14-15volts) dnt forget tha jumper and the groundings.. double check also you mj's


regards: sandman

Last edited by sandman15th; 2nd November 2013 at 06:51 AM.
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Old 2nd November 2013, 10:59 AM   #2712
eit is offline eit  Philippines
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Quote:
Originally Posted by sandman15th View Post
how much your rail voltage??? how much voltage u get in r24 and 25?(it must be 14-15volts) dnt forget tha jumper and the groundings.. double check also you mj's


regards: sandman
Yes -+15v on r25,24 sir and the rail is -+50v i didnt forget the jumper thanks for your reply
I will 2xcheck my b500
And post the outcome my bad english,


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Old 5th November 2013, 11:45 AM   #2713
eit is offline eit  Philippines
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Hi sir can u help me with my b500 my dc offset is 20mv and .5v in 2sc5200 base,emittee but why 2sa1943 having .12 v only is this normal b'cos when i input sound and plug a speaker my amp sound distorted in highs. What is possible my problem here im already stock up

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Old 5th November 2013, 04:02 PM   #2714
eit is offline eit  Philippines
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Quote:
Originally Posted by sandman15th View Post
how much your rail voltage??? how much voltage u get in r24 and 25?(it must be 14-15volts) dnt forget tha jumper and the groundings.. double check also you mj's


regards: sandman
Hi sir can u help me with my b500 my dc offset is 20mv and .5v in 2sc5200 base,emittee but why 2sa1943 having .12 v only is this normal b'cos when i input sound and plug a speaker my amp sound distorted in highs. What is possible my problem here im already stock up

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Old 6th November 2013, 01:20 AM   #2715
nugroho is offline nugroho  Indonesia
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Quote:
Originally Posted by sandman15th View Post
how much your rail voltage??? how much voltage u get in r24 and 25?(it must be 14-15volts) dnt forget tha jumper and the groundings.. double check also you mj's


regards: sandman
the mje 340 (Q5) must be in the same heatshink with final transistor, better if the mje 15032-33 on the same heatshink also
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Old 8th November 2013, 11:24 PM   #2716
rizqi is offline rizqi  Indonesia
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I wanted to ask Mr.Mile or the other could answer, even fellow DIYer may experience the same thing with this problem, .. why the H900 standard when playing a kick drum, bass disappears (PA as SUB) ... the 4R or 8R load. but if for a bass guitar no problem, voltage regulator 45ac-90ac-ct ... 4kva. and I do not use nsl 32. where is that must be repaired or is there any other damage?
sorry my bad english

thanks and regards
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Last edited by rizqi; 8th November 2013 at 11:32 PM.
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Old 11th November 2013, 03:07 AM   #2717
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Default good luck

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Nice work,

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good luck for bos2009
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Old 11th November 2013, 03:14 AM   #2718
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Originally Posted by boss2009 View Post
Hi.. this is my on going B500 TEF based on Liem Poo pcb.
Hope anyone can check also for any errors. My Power supply is 2x50Vac @20amps toroid. Ne5532 is replaced with NJM2068.


Regards
verry nice your project for b500 TEF, please Proceed with a project h900 TEF !!

Last edited by LIEM POO; 11th November 2013 at 03:16 AM. Reason: TEF
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Old 11th November 2013, 07:49 AM   #2719
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Originally Posted by LIEM POO View Post
verry nice your project for b500 TEF, please Proceed with a project h900 TEF !!
Hello Liem Poo... I have already parts gathered for H900TEF.... I will prepare the board this week... Many thanks for your support.. I will post a pics later...


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Old 15th November 2013, 12:10 PM   #2720
eit is offline eit  Philippines
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Done checking componet and voltage measuring found out 100r resistor change value to 1mr and finally my b500 is working fine now thanks to mr.apex and to other here.
Its sound really good

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