urei 1601e power supply?
Printed From: Speakerplans.com
Category: General
Forum Name: Electro Frying Forum
Forum Description: Talk about drivers, processors and mixers
URL: https://forum.speakerplans.com/forum_posts.asp?TID=35382
Printed Date: 27 March 2026 at 8:46am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: urei 1601e power supply?
Posted By: boycey
Subject: urei 1601e power supply?
Date Posted: 01 February 2010 at 1:51pm
i've murdered mine  taken it to the doctor/surgeon and apparently soundcraft don't have any, if they do get one it'll take 3 months and cost me £80. looking at the cost of generic switchmode power supplies this is a little over the odds though there may be something i'm missing? according to the feller who's opened it up there's no reason a generic one couldn't be fitted but that the board isn't marked with output voltages, any ideas? merry christmas, happy new year and all that, been a couple of months, hope none of the major posters have disappeared after any major bunfights  ------------- the only thing more dangerous than a person who doesn't give a f**k is a person who gives a sh*t. |
Replies:
Posted By: JR.junior
Date Posted: 01 February 2010 at 6:00pm
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This is one top shelf mixer. Shame it's discontinued. See here for block diagram.
http://www.ureidj.com/downloads/1601E_UG.pdf - http://www.ureidj.com/downloads/1601E_UG.pdf ------------- Support the scoop technology, larger mouth plays louder! |
Posted By: boycey
Date Posted: 01 February 2010 at 7:09pm
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thanks for the reply, it is indeed a lovely mixer, unfortunately the block diagram yields no clues as to the specifications of the power supply.
------------- the only thing more dangerous than a person who doesn't give a f**k is a person who gives a sh*t. |
Posted By: JR.junior
Date Posted: 01 February 2010 at 9:11pm
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the power supply primary100-230V , secundary ?V, 50W. ------------- Support the scoop technology, larger mouth plays louder! |
Posted By: boycey
Date Posted: 01 February 2010 at 9:36pm
indeed  ------------- the only thing more dangerous than a person who doesn't give a f**k is a person who gives a sh*t. |
JR.junior wrote:Posted By: service dept Steve
Date Posted: 01 February 2010 at 9:38pm
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Assuming it hasn't caught fire or been run over by a lorry I will be able to mend it for you. ------------- We are not "They", We are "The others" http://www.servicedept.co.uk" rel="nofollow - http://www.servicedept.co.uk - |
Posted By: boycey
Date Posted: 01 February 2010 at 9:45pm
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pmed!
------------- the only thing more dangerous than a person who doesn't give a f**k is a person who gives a sh*t. |
Posted By: JR.junior
Date Posted: 01 February 2010 at 9:46pm
hehe this is all what I can tell you.  ------------- Support the scoop technology, larger mouth plays louder! |
Posted By: service dept Steve
Date Posted: 16 February 2010 at 11:50pm
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Right, I've just heard from boycey that his power supply is installed and working. Satisfied customer, I usually like to kill 'em and hang them on the workshop wall. And no, don't work on one yourself, 400v stings. Steve ------------- We are not "They", We are "The others" http://www.servicedept.co.uk" rel="nofollow - http://www.servicedept.co.uk - |
Posted By: ceharden
Date Posted: 17 February 2010 at 12:38am
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What about the PSU in a Soundcraft E8? Played with those? Got a long-term resident one in the workshop which refuses to be repaired. I've verified everything except the SMPS transformer. The PSU runs but only until the bootstrap supply is exhausted because the auxillary supply isn't coming up. It's the second one I've had through my door with the same problem, never managed to fix the other one either. I'll have another look one day. It's not really worth buying a new PSU because it'd cost as much as buying another desk second hand. |
Posted By: service dept Steve
Date Posted: 17 February 2010 at 9:01am
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Yes, worked on plenty of those, none of it is aided by ease of access! I might be able to give you some pointers but unfortunately you would need to pm me because the inner workings of a smpsu is possibly not a good subject for open discussion just in case someone is watching whose needs exceed their skills! steve ------------- We are not "They", We are "The others" http://www.servicedept.co.uk" rel="nofollow - http://www.servicedept.co.uk - |
Posted By: t_groove
Date Posted: 22 March 2013 at 10:11pm
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hello to all i need help , i have UREI 1601 with power supply damaged. Ask to STEVE and to all users if can give me the power supply voltage like in the power board write: +V2 -V2 +V1 Agnd Agnd -V1 If is not much expensive how much for repair ? consider that im from Italy. thanks for the answer |
Posted By: t_groove
Date Posted: 02 May 2021 at 9:03am
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Ciao a tutti ho bisogno di aiuto, ho UREI 1601 con alimentatore danneggiato. Chiedere a STEVE ea tutti gli utenti se possono darmi la tensione di alimentazione come nella scheda di potenza scrivere: + V2 -V2 + V1 Agnd Agnd -V1 Se non è molto costoso quanto per la riparazione? considera che sono italiano. Grazie per la risposta
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Posted By: macros
Date Posted: 22 June 2021 at 4:53pm
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If you look carefully in the schematics, you will see the power connector and its voltages +8V GND +15V GND GND -15V
I would not recommend trying to fix the PSU yourself, it can kill you for real! I would also not recommend fixing this PSU, just get an alternative (switching one) |
Posted By: fabianmu
Date Posted: 04 July 2021 at 3:29pm
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Hello Forum, my PSU on my Urei 1601e also broke and im glad that these mixers still have owners. My Problem started with not getting any Headphone output, this was years ago and i nearly forgot it. I resently picked it up to get my old 1210 running and desided to give it a try to repair. First thing i did, was removing the front panel and desoldering the headphone jacks. After checking the voltages on the cn11 header i noticed very high voltages between ground and v+. I removed the psu and unplugged cn2 to messure it direclty and getting different voltage levels as described in the schematic. I think i have a blown component around ic1 but could not find a damaged one. Desoldered and checkt D1, D2, R16 and C8, they seam to work. could the IC1 (UCC3842A) be damaged? Some pointers what to check would be appreciated. Or should I stop worrying and get a new PSU ? in this case, which one should i get. Every help is appreciated. Best Fabian |
Posted By: service dept Steve
Date Posted: 05 July 2021 at 10:52am
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It sounds as if you are getting the three voltages at the power supply, why do you think
that the fault in the headphone output has anything to do with the power
supply directly? Could this "high" voltage at cn11 be +30v thereby meaning you have a low - voltage (ie an unbalanced output because of no 0v connection)? These mixers are a very poor design, there is no
protection from faulty components and there is always the likelihood that you have a
failed headphone amp which could pull the +-15v down. Usually though the
amp goes short circuit and kills the mixer by burning all the way back
to the processor. ------------- We are not "They", We are "The others" http://www.servicedept.co.uk" rel="nofollow - http://www.servicedept.co.uk - |