dlmac Posted December 24, 2006 Share Posted December 24, 2006 Well, after 4+ years with my nice 4.1 system it has finally bit the dust. Should I bother trying to fix this or not? Below are some pictures of what has happened. Has anyone else see this before? Before I finally found the fired circuits I browsed the forums and everyone said to check R12, R26 and the bosh board but they were all fine, my fuse was blown so I replace it and tried firing it up again but all I heard was another loud pop. Both the circuits are blown I only took pictures of the one because that one shows a whole and one leed completely burnt away, the other is just cracked. The sub was not connected to a surge protector, so I am pritty sure I know what happened. But why these ciruits and not just the fuse? Quote Link to comment Share on other sites More sharing options...
Bohemian_Rhapsody Posted December 25, 2006 Share Posted December 25, 2006 looks pretty bad... but no harm in trying to fix it... do you have a 120V version ? perhaps i can help you with the component specs incase you have the 230V version. best of luck! Quote Link to comment Share on other sites More sharing options...
dlmac Posted December 26, 2006 Author Share Posted December 26, 2006 I actually have the 120v version, but since both of those chips are fired I can read any info off them. Where would I look for specs? part numbers... Quote Link to comment Share on other sites More sharing options...
Bohemian_Rhapsody Posted December 26, 2006 Share Posted December 26, 2006 unfortunately, the only way to get to know the specs is to ask someone who has a working 120v set. Quote Link to comment Share on other sites More sharing options...
esseeayen Posted February 3, 2007 Share Posted February 3, 2007 hey i have a 220v set with the same board appears in many different BASH pc speakers, including the klipsch promedia 4.1 series. my (very old) Creative megaworks speakers seem to have the exact same Indigo 640023 rev1 power board in it. Can measure what component values are for R16, R17, C11 and D4. These seem to have fried on my board and need replacing however the data on the bill of materials for this board seems to be very hard to get my hands on! Quote Link to comment Share on other sites More sharing options...
sayh Posted December 6, 2009 Share Posted December 6, 2009 PM4.1 220V version (640023 Rev1 power board) R30 150K 1/4 WATT 5% R16-R15 432 OHM 1/4 WATT METAL FILM 1% R19-R18 432 OHM 1/4 WATT METAL FILM 1% R29 34K 1/2 WATT 5% R23 1K 1/4 WATT METAL FILM 1% R20-R17 22 OHM METAL FILM 1/4 1% R22 47K 1 WATT 1% R8 1K OHM 1/2 WATT CARBON 5% Z2-Z3-Z4-Z5 1N5245B 15V 1/4 WATT ZENER Z1 1N4746A 18V 1/2 WATT ZENER C20-C19 200V 680UF ELECTROLITIC R33 ZERO OHM JUMPER R24 205K METAL FILM 1/4 WATT 1% R26 Inrush Current Limiter THERMISTER DSP104 D5-D8 21TFK8AV (LT897)(1N4936) C8-C9 mylar 2A472J 0.0047UF 4.7NF 4700PF C10 LGU685K MER250 METAL FILM POLYESTER 6.8UF c21-C22-C25-C24 METAL FILM POLYESTOR MEF 250V .1K = 0.1pf 0.0001nf 1.0000000000uf Q4-Q5 IRF740 400V Single N-Channel HEXFET Power MOSFET in a TO-220AB package Q6 MPSA92 PNP TRANSISTER HIGH VOLTAGE D1 MOSPEC U15A20 FAST RECTIFIER DIODE (15A,50-200V) D3 PEC 130 ER1602 16.0 AMP FAST RECOVERY RECTIFIER Q1 RFP70N06 70A, 60V, 0.014 Ohm, N-Channel Power MOSFETs Q2-Q3 2N4401 NPN GENERAL PURPOSE Quote Link to comment Share on other sites More sharing options...
Mister_Clean Posted December 6, 2009 Share Posted December 6, 2009 just send the unit to www.sybesmas.com and have them repair it. they will let you know how much it costs roughly before you send it in, it is usually like $60 plus another $40 or something like that for shipping. Quote Link to comment Share on other sites More sharing options...
izen Posted December 28, 2009 Share Posted December 28, 2009 There is an extremely helpful www site with circuit diagrams including component values and a cursory circuit explanation at http://www.thompdale.com/bash_amplifier/bash_amp.htm Good luck fixing your Promedia 4.1! Unfortunately, for my Promedia 4.1, it's my DC-DC Converter board (64014 Rev 6) which is malfunctioning. If you decide to trash yours after all, please consider offering your parts for salvage to the list. I'm on the prowl for replacement new converter board, and Klipsch doesn't sell them. Quote Link to comment Share on other sites More sharing options...
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