JBL Woofer Sub 140/230 Power Supply Circuit Diagram

Autor

Beitrag

Mohammed_Anwar
Neuling

#1 erstellt: 18. Jan 2020, 12:29

Dear All Good Day,

I am looking for Circuit Diagram - JBL 140/230 Power Supply Section - Written on Printed Circuit Board No: 104-A0527-6301V-E

Please help me.. Since IC blown Cant make out the number, Only single IC 8-Legs

good Luck to All.
mdanwarazy@gmail.com

[Beitrag von Mohammed_Anwar am 19. Jan 2020, 11:14 bearbeitet]

PBienlein
Inventar

#2 erstellt: 18. Jan 2020, 14:08

Hello,

can you post any photos of the Board with the "Img"-function here? Maybe help would than be possible.

Greetings
PBienlein

PBienlein
Inventar

#3 erstellt: 19. Jan 2020, 12:14

Mohammed_Anwar
Neuling

#4 erstellt: 21. Jan 2020, 06:34

Dear Sir,

Any chance to get subject Circuit Diagram ...

Regards
Anwar

PBienlein
Inventar

#5 erstellt: 21. Jan 2020, 10:15

As far as I know, there is no service manual available for this standby-smps. But you can search for the datasheet of the pwm-ic

click here . There you'll find in most all cases a "Typical Application Circuit", which might be somewhat close to reality.

By the way: what is the problem with your smps?

Mohammed_Anwar
Neuling

#6 erstellt: 08. Feb 2020, 07:32

Dear Sir,

First of all I thank you for your support. May God Bless you.

Problem in my JBL Sub woofer is...

OUTPut Transistors got burnt + Capacitors Gone Swelled .. Preamp Circuit Transistors got burnt + R113 burnt and Pcb became black

SMPS Circuit IC Blown + Fuse gone -

I had replaced Output Transistors + All Swelled Capacitors + Preamp Transistors + resistors

With your help SMPS ic replaced + Fuse replaced + OPT1 coupler also changed.. In UAE its difficult to get spare parts - now want to switch on by connecting..

kindly help what precautions to be taken...

Regards.Anwar

buz91a
Ist häufiger hier

#7 erstellt: 31. Dez 2021, 00:41