Took a 10mH inductance, everything (C15, C16, the bridge, EC13, T2, the fuse) changed, it works !
Thank you very much for all the help !...
smurtz
Senior Member
Last Activity: 03-16-2025, 10:37 PM
Joined: 05-04-2012
Location: Paris
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Excellent, thanks a lot, I'll try !...Leave a comment:
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Thanks, I thought it was the other way around.
ok but what value of ET20 (how many mH ?) ?
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[ATTACH]n3533374[/ATTACH]Thanks, I thought it was the other way around.
ok but what value of ET20 (how many mH ?) ?
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[ATTACH]n35333...Leave a comment:
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I unsoldered the inductor, it has written on the side HX SG01323 and under it '14'
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I could not find anywhere a data sheet on SG01323...I unsoldered the inductor, it has written on the side HX SG01323 and under it '14'
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3533213}[/ATTACH]...Leave a comment:
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Well spotted, the ntc is dead (reads 14 ohms).
C15, C16, the bridge, EC13 as well.
T2 is indeed an ET20/UT20, but how can I check of how many mH ? (I checked, no continuity between 1 &2 or 3 & 4)Leave a comment:
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Cambridge Audio Stream Magic 6 - Power Supply
I have here a Cambbridge Audio Stream Magic 6 which does not power on.
When opening the case the PSU appears to be faulty:
[URL=filedata/fetch?id=3532660&d=1734725673][ATTACH=JSON]{"alt":"Click image for larger version Name:\tstr_mgc_psu_01.jpg Views:\t0 Size:\t2.79 MB ID:\t3532660","data-align":"none","data-attachmentid":"3532660","data-size":"medium"}[/ATTACH][/URL]
IC1 (ICE3BR0665J), D2, the rectifier bridge, C15,C16 are dead and T2 is fried:
[URL=filedata/fetch?id=3532658&d=1734725918][ATTACH=JSON]{"alt":"Click... -
Unfortunately, contrary to what is mentioned on the schematic there is no F2 or F3 fuses !
EDIT: seems to be a R = [B]0,22[/B] Ω ±[B]5[/B] % [B]250[/B] ppm/°KUnfortunately, contrary to what is mentioned on the schematic there is no F2 or F3 fuses !
EDIT: seems to be a R = [B]0,22[/B] Ω ±[B]5[/B] % [B]250[/B] ppm/°KUnfortunately, contrary to what is mentioned on the schematic there is no F2 or F3 fuses !
EDIT: seems to be a R = [B]0,22[/B] Ω ±[B]5[/B] % [B]250[/B] ppm/°KUnfortunately, contrary to what is mentioned on the schematic there is no F2 or F3 fusesLast edited by smurtz; 12-02-2023, 10:11 AM.Leave a comment:
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Thanks,
I changed the 7915, checked for shorts, switched on and it immediately got me a fume.. Fuse F1 is now broken.
However C65 (2200uF capacitor) seems to be the one that was causing the problem, I'm going to change it as well.
Any clue of what is the value of the fuse / what kind of fuse it is ? It looks like a resistor.
Yves
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Replaced the relay, but nothing new.
When I switch the amp on, the fan starts and I hear the relay click once (r68 voltage is 0).
The led "clip" is on, the led "on" stays off.
When I turn the amp off, I hear the relay click once
On schematic page 15:
near C53 I have +15V -> ok
near C59 I have +12V -> ok
near C41 I have +19V (marked +18V on the schema)
near C62 I have 0V (marked -15V on the schema) ->I have -20V measured at Vin on regulator RG2, I checked regulator RG2, seems ok but I'm going to change...Leave a comment:
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Re: MARKBASS MINIMARK 802 - What is that relay ?
I changed C68, switched on, and tada ! Well, tada, now the fan starts, the on led is off.
On the board I have the +15V.
the led clip is on. I did not reconnect speakers when switching on.
I had to order a new relay since I ordered a 24V before seeing lotas' message.
Once I receive the relay I'll do some more checks.
YvesLeave a comment:
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Re: MARKBASS MINIMARK 802 - What is that relay ?
excellent, thanks!
YvesLeave a comment:
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Re: MARKBASS MINIMARK 802 - What is that relay ?
Thanks a lot, I ordered the relay.
Tried to shunt it, but no effect. Current goes to transformer TRANS5_1_1 but not past it.
I first thought the transformer was dead and unsoldered it to test it, but it seems ok.
However since enough room was left without the transformer I was able to test capacitor C68 (1uF/250V) which (unsoldered) reads 209nF.
Hopefully it'll work again once that capacitor+relay changed. More news when I receive the parts.
YvesLeave a comment:
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MARKBASS MINIMARK 802 - What is that relay ?
Hello,
I got hold of a non working bass amp Markbass minimark 802, witch stays dead when turned on.
Before checking anything else, when opening, the first thing I see is a broken relay:
What would be the replacement part ?
I tried to look on the schematic of a similar markbass amp [URL="http://zorglub29.free.fr/repairlogs/markbass_minimark802/Mark%20Bass%20Parsek%20LittleMarkII%20combo.pdf"]>HERE<[/URL] but nothing is mentionned except "RL1".
On the remaining part of the relay...Last edited by smurtz; 11-12-2023, 07:27 AM. -
Re: Another SAMSUNG 2493HM !
wow , thanks for this very detailed post ! I thought the hard glue became conductive only when becoming brown, I'll try that
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Re: Another SAMSUNG 2493HM !
Thanks
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Re: Another SAMSUNG 2493HM !
ok, back one year later on the same monitor !
I suddendly heard a big >clac< a flash at the bottom of the back side of the monitor and a little smoke : black screen....
I opened it again and found a resistor on the power board that is all back and when tested reads 6,5 MOhms (RM801).
Tested QM803 and QM801 they are shorted.
unlike here, TM801 seems ok:
[url]https://www.badcaps.net/forum/showthread.php?t=18760&highlight=2493hm[/url]
Going to order 2 FQPF9N50C...Leave a comment:
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Re: who speak french here
why is that ?Leave a comment:
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Re: DELIUM Vw19B
I have an old 15W CFL (50Hz 110mA), should I try ? (despite the fact that the post talks about a 14W CFL)
ThanksLeave a comment:
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Re: DELIUM Vw19B
ok, I received the caps & changed them.
I still have the 2 seconds to black, but now the led switches to standby and stays orange.
Once in standby I measured U101 & U102:
[CODE]
U101
LD1117A - L33AUL
1 : 0
2 : 3,30V
3 : 4,98V[/CODE]
[CODE]U102
LD1117A - L18AUM
1 0
2 1,79V
3 4,29V[/CODE]
And CN801
[CODE]CN801:
1 (VCC5V) 5V
2 (VCC5V) 5V
3 (GND) 0
4 (GND) 0
5 (ON/OFF) 0,06V
6 (BRIGHTNESS) 0...Last edited by smurtz; 08-29-2012, 02:51 PM.Leave a comment:
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Re: DELIUM Vw19B
The meter gives:
S1 > S2 : 0,481K Ohms
S3 > S4 : 0,483K OhmsLeave a comment:
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