Orange crush 20 Blowing fuses

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Thomas1969
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Joined: Sat Jun 23, 2018 7:27 am

Orange crush 20 Blowing fuses

Post by Thomas1969 » Sat Jun 23, 2018 7:30 am

Hi gents, My orange crush 20 keeps blowing fuses. Any ideas on what could be the cause? Ive looked at the board and there are no bulging caps or blown resistors etc that I can visibly see.
Could the Td2050 chip be the cause?

Im having trouble trying to find a schematic. I found one but it seems slightly different.

Thomas1969
New Member
Posts: 6
Joined: Sat Jun 23, 2018 7:27 am

Re: Orange crush 20 Blowing fuses

Post by Thomas1969 » Sun Jun 24, 2018 1:13 am

Well I removed the TDA2050 chip and put a 500ma fuse in as thats all I had and it didnt blow. So Im assuming I need to replcae the TDa2050. Problem is I cant seem to find a TDA2050 anywhere local.

So can I use an LM1875 instead?

Thomas1969
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Posts: 6
Joined: Sat Jun 23, 2018 7:27 am

Re: Orange crush 20 Blowing fuses

Post by Thomas1969 » Sun Jun 24, 2018 8:39 am

So I soldered in the LM1875 and she works fine. No blown fuses and sounds great.

Thanks for all the help, couldn't have done it without you guys.. :D :D

Les Paul Lover
Duke of Orange
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Location: Derby, England

Re: Orange crush 20 Blowing fuses

Post by Les Paul Lover » Sun Jun 24, 2018 8:00 pm

Thomas1969 wrote:
Sun Jun 24, 2018 8:39 am
So I soldered in the LM1875 and she works fine. No blown fuses and sounds great.

Thanks for all the help, couldn't have done it without you guys.. :D :D
:lol:

Well done!!!
Most of us hanging around here own some of the valve amps. Sorry we couldn't help you, but glad you got it sorted yourself!!!!
Ant

Orange Gear: RV50 MKI, R30, AD15, PPC212
And.... Genz Benz Black Pearl 30
Past Orange: AD30TC Combo, TT, AD5


Guitars: Gibson Les Paul Standard Faded, Vigier Expert Retro 54, Gibson SG 70s Tribute, Aria Pro II RS X80, G&L ASAT Special Tribute

Thomas1969
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Joined: Sat Jun 23, 2018 7:27 am

Re: Orange crush 20 Blowing fuses

Post by Thomas1969 » Mon Jun 25, 2018 9:44 am

Yeah so am I...lol. One thing thigh is that when I turn up the Dirty know the amp seems to get less distortion although louder. As I turn it down the distortion increases but of course so does volume so I have to turn up the volume on the guitar.

This is of course without touching the Gain knob which is just a touch off full. Is this correct? Is this how the dirty knob works?

PBA
Rocker
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Joined: Wed Jul 15, 2015 2:01 pm

Re: Orange crush 20 Blowing fuses

Post by PBA » Thu Jul 05, 2018 9:25 am

Few of us here would claim to know much about solid state circuits. Personally I wouldn't claim to know much about any electronic circuits! However: LM1875 does appear to be different to TDA2050. It seems logical that potentiometers, resistors etc. associated with one would be less than optimum for the other.

Maybe you should keep looking for the right component?

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