Author Topic: yamaha amplifier repair (equivalent for 10gl2cz47)  (Read 2444 times)

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Offline paulhm81

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yamaha amplifier repair (equivalent for 10gl2cz47)
« on: March 27, 2014, 06:34:18 am »
hi
I need some help repairing a yamaha mixer/amplifier. I attached the schematic for the power supply. The unit was powered from a crappy generator at an outdoor party and when the fuse blew of course they used a shunt. The problem is this diode - 10gl2cz47. I can't find it anywhere. It's in the upper right corner of the schematic. I found the following parts blown also - q817(2sk2842) , r872,873,874,875 so i presume ic803 is fried also. If anyone has a bit of time to take a look i'd appreciate it. I attached the datasheet for the diode.  Please tell me a replacement for this diode.

Thank you!
 

Offline miguelvp

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Offline Shock

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Re: yamaha amplifier repair (equivalent for 10gl2cz47)
« Reply #2 on: March 27, 2014, 07:06:07 am »
Ebay.com 3 hits.

Soldering/Rework: Pace ADS200, Pace MBT350
Multimeters: Fluke 87V, 117, 27/FM     >>> Fluke 51/52 Thermometer Parts Required <<<
Oszilloskopen: Rigol DS1054Z, Phillips PM3065
 

Offline miguelvp

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Re: yamaha amplifier repair (equivalent for 10gl2cz47)
« Reply #3 on: March 27, 2014, 07:10:07 am »
Also check the 20dl2c and 20fl2c from Toshiba for the 200 and 300 VRRM rating, couldn't find the 400 one equivalent.

Edit, duh, the 400 one is 20gl2c :)

Edit again: link to the 20gl2c from findchips http://www.findchips.com/search/20gl2c

datasheet: http://download.siliconexpert.com/pdfs/2012/2/12/6/52/45/133/tos_/manual/20gl2c41a_en_wm_20081227.pdf

but the link on my previous post will give you the original one.
« Last Edit: March 27, 2014, 07:16:49 am by miguelvp »
 

Offline paulhm81

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Re: yamaha amplifier repair (equivalent for 10gl2cz47)
« Reply #4 on: March 27, 2014, 07:26:26 am »
thanks miguelvp   - i will look it up. The first link was 80$ shipping. That's the first reason for searching an equivalent so i can buy it in europe, maybe even a local dealer. I'll look at that 20gl2c. I didn't know what to choose because of that Ultra Fast Reverse-Recovery Time : trr=35ns (Max.) I found one diode in a local dealer that was rated 1200 Vrpm but the recovery time was 40 ns and i don't understand if that's an issue.  The datasheet is attached.
 

Offline miguelvp

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Re: yamaha amplifier repair (equivalent for 10gl2cz47)
« Reply #5 on: March 27, 2014, 07:33:10 am »
$80 shipping??? do the ebay thing like shock mentioned, will take a month from china but way cheaper
http://www.ebay.com/sch/i.html?_nkw=10gl2cz

No hits on the 20gl2c, btw the 20gl2c is the same company as the 10 one so, ebay it if you must.
 

Offline paulhm81

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Re: yamaha amplifier repair (equivalent for 10gl2cz47)
« Reply #6 on: March 27, 2014, 08:16:04 am »
got 2 of them on ebay I searched ebay.de before posting here but for some reason i didn't get any hits. That's strange. Anyway, thanks for your replies and i hope i wil get it fixed. It'a about time i looked at it because it's been sitting on a shelf for 2 years. I didn't have a schematic and the fried resistors were smd and i had no idea what values they had. Found the service manual on http://www.eserviceinfo.com/ few days ago.
 


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