Capacior leak on my GK 800RB - diyAudio
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Old 22nd December 2005, 03:59 AM   #1
jeyvi is offline jeyvi  Philippines
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Default Capacior leak on my GK 800RB

i thought my power transformer smoked. when i plugged it again and opened the cover. after 3 seconds one of the 470uf 63v capacitors emitted smoke. it has leak!

will it be possible to order a capacitor here in the GK site store?

if i can get the capacitor here... is it ok if i only change the one with a leak or i have to change all 4 capacitors?

and... there's a capacitor with the same values but its a vertical one. but the one on the 800RB head is a horizontal type capacitor.
will it be ok if i replace it with a vertical type?

i need your help GK guys ASAP!

thanks very much!!!
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Old 23rd December 2005, 02:06 PM   #2
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If one is bad, the other 3 are almost bad. If it was my amp, i would replace all 4.
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Old 23rd December 2005, 02:40 PM   #3
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I agree out replacing all 4, but I'd up the voltage to a 75v cap. The 100w amp section (which the 470/63 are for) runs 60v rails. A cap higher than 63V might survive better.
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Old 23rd December 2005, 08:38 PM   #4
jeyvi is offline jeyvi  Philippines
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alright...

i've replaced the one that leaked. and i plugged it to see if it works. then again... after 3-5 seconds... the other 3 capacitors smoked!

now i dont know whats causing them capacitors to blow and smoke.

im afraid if i replace all 4. the other 4 bigger capacitors might get smoked as well.

theres no service center here... so i'll probly just have it checked by a good technician.

damn... i havent even used the amp yet.

thanks very much
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Old 26th December 2005, 09:24 AM   #5
jeyvi is offline jeyvi  Philippines
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Old 26th December 2005, 09:46 AM   #6
Netlist is offline Netlist  Belgium
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A few possibilities come to mind:
You reversed the polarity of the cap. Electro's don't survive that.
More probably, as the old one died as well, is a broken rectifier diode before the cap. Replace it anyway, as I have found myself in the situation that a perfectly good diode seemed to behave badly under working conditions.

/Hugo
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