Salas hotrodded blue DCB1 build - Page 158

ladalong · 4th January 2012, 08:53 PM

Hi everyone

Sorry for noobie question here….
I just finish up the build Hypnotize Black version

But first three LEDS light up fine(both Channels) but second Five LEDS(both channels) not lit up and regulated voltage is +18.3V and 18.3V…(Im using Hammond 12-0-12 2AFor testing) seems like regulator does not work properly… using 10ohm resistors for current limiting…

I checked LEDs polarity several times… and others like TR and resistors too… Relay works fine

I checked each five LEDS banks and it lit up fine individually, but not lit up all five LEDS altogether.

I really appreciate any help
Thanks
John

Salas · 4th January 2012, 10:35 PM

In the 5 leds strings the cathodes (shorter legs, aligned with flat rim cut D on led bodies) must go to the round pads. Is it so?

ladalong · 4th January 2012, 11:11 PM

Hi Mr. Salas,

Thank you for quick reply. Yes I checked several times already, for 5 banks of LEDS directional is OK. If I connect battery each LEDs, it works fine though.

Should I change the TRs and FETs ???

Thank you

Salas · 4th January 2012, 11:26 PM

Maybe you miss 1 Ohm resistors or simply jumper links where it has a resistor symbol with ''1'' in it?

ladalong · 5th January 2012, 12:19 AM

Hi Mr. Salas,

Problems solved I recheck it and each one contains one Bad Leds Change to new one works great !!!

Thank you again

I really appreciate your contribution ti this diy comunity.

John

Salas · 5th January 2012, 12:20 AM

You listen to it already?

ladalong · 5th January 2012, 12:52 AM

Not yet I just confirmed regulator works! Voltages are within range and output DC offset looks good. will connect and listen it soon. Cant wait....
hopely +18, -18 did not damage anything.....

Thanks

Salas · 5th January 2012, 12:55 AM

If your relay clicks, regulator voltages are around 10V each and the DC offset on output is good, I don't see any grounds for it had suffered possible damage. Let us know how it went and post a picture also if possible when it will test alright.

Praudio · 16th January 2012, 05:39 AM

Hi Salas, built my 1st DCB1(hotrod) and on one side the 5 led don't glow(and they are right position,no error)nothing hot or smoke and relay work. Start it with variac and stop at about 85AC on 120AC. What transistor is wrong ? Thank's

Salas · 16th January 2012, 09:21 AM

If you are sure everything is assembled in order, check the CCS Mosfet of the bad side first.

4th January 2012, 08:53 PM	#1571
ladalong diyAudio Member Join Date: Sep 2009	Noob Help for Hyponotize DCB1 Black Hi everyone Sorry for noobie question here…. I just finish up the build Hypnotize Black version But first three LEDS light up fine(both Channels) but second Five LEDS(both channels) not lit up and regulated voltage is +18.3V and 18.3V…(Im using Hammond 12-0-12 2AFor testing) seems like regulator does not work properly… using 10ohm resistors for current limiting… I checked LEDs polarity several times… and others like TR and resistors too… Relay works fine I checked each five LEDS banks and it lit up fine individually, but not lit up all five LEDS altogether. I really appreciate any help Thanks John

16th January 2012, 05:39 AM	#1579
Praudio diyAudio Member Join Date: Mar 2002 Location: Canada	Hi Salas, built my 1st DCB1(hotrod) and on one side the 5 led don't glow(and they are right position,no error)nothing hot or smoke and relay work. Start it with variac and stop at about 85AC on 120AC. What transistor is wrong ? Thank's __________________ Praudio

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4th January 2012, 10:35 PM	#1572
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	In the 5 leds strings the cathodes (shorter legs, aligned with flat rim cut D on led bodies) must go to the round pads. Is it so?

4th January 2012, 11:11 PM	#1573
ladalong diyAudio Member Join Date: Sep 2009	Hi Mr. Salas, Thank you for quick reply. Yes I checked several times already, for 5 banks of LEDS directional is OK. If I connect battery each LEDs, it works fine though. Should I change the TRs and FETs ??? Thank you

5th January 2012, 12:19 AM	#1575
ladalong diyAudio Member Join Date: Sep 2009	Hi Mr. Salas, Problems solved I recheck it and each one contains one Bad Leds Change to new one works great !!! Thank you again I really appreciate your contribution ti this diy comunity. John

5th January 2012, 12:20 AM	#1576
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	You listen to it already?

5th January 2012, 12:52 AM	#1577
ladalong diyAudio Member Join Date: Sep 2009	Not yet I just confirmed regulator works! Voltages are within range and output DC offset looks good. will connect and listen it soon. Cant wait.... hopely +18, -18 did not damage anything..... Thanks

5th January 2012, 12:55 AM	#1578
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	If your relay clicks, regulator voltages are around 10V each and the DC offset on output is good, I don't see any grounds for it had suffered possible damage. Let us know how it went and post a picture also if possible when it will test alright.

16th January 2012, 09:21 AM	#1580
Salas diyAudio Chief Moderator Join Date: Oct 2002 Location: Athens-Greece	If you are sure everything is assembled in order, check the CCS Mosfet of the bad side first.