DB audio power trans always busted

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DB audio power trans always busted

Post by Lenaren on Mon Nov 04, 2013 6:05 pm

Mga master help po... may ni-rerepair akong amplifier sabog ang isang pares na tranny... 2SA1943 at 2SC5200.... ang problem po pag pinalitan ko OK sya .... normal ang init ng heat sink... may konting lagatik ung sound output nya... akala ko normal lang... pero kinaumagahan nung paandarin ko ulit.... ayaw ng gumana... sobrang init ng heat sink nya... hanggang sa sumabog ung 1 pares na tranny at 2 fuse...

san po kaya master ang problem nito? Bagong palit po lahat ng mga resistor kasi kinalawang na ang mga paa... Ung problem nito dati master ayaw mag-on ung relay... nung pinalitan ko ung mga resistor naging OK kaso ito ung naging problem...

Salamat!

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Re: DB audio power trans always busted

Post by zandertech on Mon Nov 04, 2013 11:06 pm

boss check mo ung mga driver transistors tsaka ung bias transistor kung  meron man nakahilera un sa mga output transistor kadalasan nakadikit din sa heatsink tag isa bawat channel,.and may naexperience pla ko nyan ung ilalim ng leads ng driver tansistors may leak at corrosion kaya sya lumalagatik,.check mo rin

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Re: DB audio power trans always busted

Post by Electro on Wed Nov 06, 2013 12:06 pm

baka di balanse ang bias niiya master

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Re: DB audio power trans always busted

Post by arkin on Wed Nov 06, 2013 6:42 pm

cguro leak na bias transistor nyan,replace lng muna tapos check mo f equal ba or exact lng yong bias voltage nyan.mkikita mo ang bias trans sa heat sink mismo ng power trans.prang c828 package nyan.DB amp yan,cguro s9014 value nyan.

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Re: DB audio power trans always busted

Post by Mcdo Scout on Thu Nov 07, 2013 1:07 pm

yep possibilty yan nasa bias ang problem

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Re: DB audio power trans always busted

Post by ultrasonic™ on Fri Nov 08, 2013 11:26 am

agreed... kong sobrang init ng mga tranny at hinaan lng dahil tumutunog nmn ang speaker hanggang na busted ang power tranny. ay sa bias nga yan... e set mo muna sis...

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Re: DB audio power trans always busted

Post by DJFEL on Mon Nov 11, 2013 8:02 am

my dc offset yan...try e chik yong sa kabilang chanel sis para may idea po ka U...yong bias at sata driver...palitan mo nalang yan sis para ewas kabog..

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Re: DB audio power trans always busted

Post by arkin on Tue Nov 12, 2013 1:53 pm

kng my dc offset amp mo,d tatagal ng isang minuto speaker mo.matutusta ito:D mas malaki ang tsansa na mataas bias ng amp mo.

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Re: DB audio power trans always busted

Post by danny on Tue Nov 19, 2013 1:09 pm

cge basa mode ako

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Re: DB audio power trans always busted

Post by Lenaren on Sun Dec 29, 2013 6:44 am

Update lng... ok na po pla ito....

mga salarin...

leak na 2SA1943 (2 pcs), A940, C2383, at A1913....

tanong lng po... alin po dito ang driver trans?

Thanks! 1 + po kyong lahat


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Re: DB audio power trans always busted

Post by ultrasonic™ on Fri Jan 03, 2014 5:16 pm

grabe shotgun method ata yan jajajjajaja... pero ok na rin atleast na solve sis ^_^

kng power driver - ung a1943 at c5200
kng vas driver maybe ung c2883 at a1913 ata ung kasi ang binulong ni sir danny sakin ^_^

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Re: DB audio power trans always busted

Post by danny on Mon Jan 06, 2014 8:39 am

sis ultra
350W @8 ohms in the making
matatagalan pero ok lang hehehe  Very Happy Laughing cheers 

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Re: DB audio power trans always busted

Post by ultrasonic™ on Tue Jan 07, 2014 7:00 pm

ok lng sir.. sulit din nmn ang pghihintay kng mapa publish na sa public   ^_^

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Re: DB audio power trans always busted

Post by danny on Wed Jan 08, 2014 3:33 pm

let's see  Very Happy Very Happy 

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Re: DB audio power trans always busted

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