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March 26, 2017, 01:06:41 am

Author Topic: SEX C4S Question  (Read 139 times)

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Offline proud indian

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SEX C4S Question
« on: March 20, 2017, 03:59:18 am »
I was going to post my c4s problem amd saw this thread.

Well, my c4s is eating led's. Every six months or so one channel led will go bust and that channel will stop working. I ordered a set from BH and got 4 of them. Now I am down to one. I have changed tubes.

On  the rear of the board,  where a " jumper" Wire is, there is a discolouration. 

Any suggestions. If it matters, I am on 240v.


Shreekant
system 1. oppo, quickie,SEX 2.1 ( V cap), Decware DFR8 in ZOB cabs
System 2. Tascam cd200, Terra Dac,Zbox,Decware Zen amp(V cap) Lowther PM6A in Acousta horns.
Maple rack, Brass footers,Power conditioner, dedicated treated room, iso pads, plenty of tubes. All cables DIY.

Offline Caucasian Blackplate

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Re: SEX C4S Question
« Reply #1 on: March 20, 2017, 07:38:08 am »
Can you post a photo of your SEX PCB?
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline proud indian

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Re: SEX C4S Question
« Reply #2 on: March 20, 2017, 01:58:24 pm »
Ok. Will do that later this week.

Thanks,

Shreekant
system 1. oppo, quickie,SEX 2.1 ( V cap), Decware DFR8 in ZOB cabs
System 2. Tascam cd200, Terra Dac,Zbox,Decware Zen amp(V cap) Lowther PM6A in Acousta horns.
Maple rack, Brass footers,Power conditioner, dedicated treated room, iso pads, plenty of tubes. All cables DIY.

Offline proud indian

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Re: SEX C4S Question
« Reply #3 on: March 20, 2017, 06:00:49 pm »
Hopt I got it right.
Shreekant
system 1. oppo, quickie,SEX 2.1 ( V cap), Decware DFR8 in ZOB cabs
System 2. Tascam cd200, Terra Dac,Zbox,Decware Zen amp(V cap) Lowther PM6A in Acousta horns.
Maple rack, Brass footers,Power conditioner, dedicated treated room, iso pads, plenty of tubes. All cables DIY.

Offline Caucasian Blackplate

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Re: SEX C4S Question
« Reply #4 on: March 21, 2017, 06:38:14 am »
What's your line voltage? What voltage is your power transformer rated for?  Are the 8.2K resistors in place?

Those resistors are charred because there's too much B+ across them.  Having used many of that exact resistor across the exact voltage that's supposed to be present in the kit, that amount of discoloration is almost certainly an indicator of too much available voltage.

-PB
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline proud indian

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Re: SEX C4S Question
« Reply #5 on: March 21, 2017, 07:04:06 am »
Do you mean my voltage at the wall outlet...... if so, it is 240v, which is the transformer I requested for. The 8.2k are in place.

Shreekant
system 1. oppo, quickie,SEX 2.1 ( V cap), Decware DFR8 in ZOB cabs
System 2. Tascam cd200, Terra Dac,Zbox,Decware Zen amp(V cap) Lowther PM6A in Acousta horns.
Maple rack, Brass footers,Power conditioner, dedicated treated room, iso pads, plenty of tubes. All cables DIY.

Offline proud indian

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Re: SEX C4S Question
« Reply #6 on: Yesterday at 08:46:04 pm »
Checked the voltage, they are bang on. No problem there.

Shreekant
system 1. oppo, quickie,SEX 2.1 ( V cap), Decware DFR8 in ZOB cabs
System 2. Tascam cd200, Terra Dac,Zbox,Decware Zen amp(V cap) Lowther PM6A in Acousta horns.
Maple rack, Brass footers,Power conditioner, dedicated treated room, iso pads, plenty of tubes. All cables DIY.