Dynacord Powermate 1000 Powered Mixer Repair : Learn How to Repair To Component Level
Вставка
- Опубліковано 24 лис 2024
- A customer brought me a Dynacord Powermate 1000 mixer that is stuck in protect mode. Let's find out why...
Part Two is here : • Dynacord Powermate 100...
I work in collaboration with:
The Electronics Channel (with Carlos and Detlef)
/ @theelectronicschannel
Gran Canaria Uncovered
/ @grancanariauncovered (with Detlef and Julie. Not electronics related)
Friends of LER
Det Builds Stuff - / @detbuildsstuff (Detlef)
Retro Upgrade - / @retroupgrade (Carlos)
For All Your PCB needs: free $5 discount coupon
www.pcbway.com...
Equipment used in my videos. These are affiliate links, you pay the normal price and I make a small commission.
TEST METERS
ANENG AN8009 MULITIMETER
s.click.aliexp...
amzn.to/4da4Q7h
amzn.to/4fsjkkm
amzn.to/3yuf03q
amzn.to/4fwQOOD
www.banggood.c...
KAIWEETS HT118E MULTIMETER
s.click.aliexp...
amzn.to/3yC0ZRe
amzn.to/3SHIEcy
www.banggood.c...
VC480C+ MILLIOHM METER
s.click.aliexp...
amzn.to/46Gg1Cm
amzn.to/3YwUjyn
MESR-100 ESR METER
amzn.to/3yxQ0Zd
amzn.to/3WSr73A
s.click.aliexp...
XC6013L CAPACITOR METER
s.click.aliexp...
amzn.to/4cf2lzm
amzn.to/4dw9cp5
TM-902C TEMPERATURE METER
s.click.aliexp...
amzn.to/4fAz44L
amzn.to/4fBxD69
LCR-T4 COMPONENT ANALYZER
s.click.aliexp...
www.banggood.c...
amzn.to/3X4rOHv
amzn.to/3Agcj6h
FNB58 USB ANALYZER
s.click.aliexp...
amzn.to/3MgBFnn
amzn.to/4dyLU1H
www.banggood.c...
PCI POST ANALYZER
s.click.aliexp...
amzn.to/4dd8ihw
amzn.to/3LTpeO7
TL460S PLUS PCI_E ANALYZER
s.click.aliexp...
amzn.to/3WEsdi6
TOOLTOP ET120MC2 SCOPE
s.click.aliexp...
amzn.to/4dCaz5L
amzn.to/4dxOYLt
FNIRSI 1014D SCOPE
s.click.aliexp...
amzn.to/3AdZqK1
www.banggood.c...
NPS3010W 30V 10A PSU
s.click.aliexp...
amzn.to/4dzl2yM
T12 STATION WITH M8 9501 HANDLE
s.click.aliexp...
amzn.to/46E73W6
M8 9501 HANDLE
s.click.aliexp...
YIHUA 982 Soldering Station C210/C245
s.click.aliexp...
FNIRSI HS-02 PORTABLE SOLDERING C210/C245
s.click.aliexp...
amzn.to/3Yv7Ma5
QUICK 861DW
s.click.aliexp...
amzn.to/3WDF4B5
amzn.to/4ci7rdW
PROS'KIT SS-331H
s.click.aliexp...
INFIRAY P2 PRO IR CAMERA + MACRO LENS
s.click.aliexp...
www.banggood.c...
amzn.to/4coSRle
amzn.to/4coSV4s
TOOLTOP ET13S THERMAL CAMERA METER
s.click.aliexp...
ET13S MACRO LENS
s.click.aliexp...
OPTICAL MICROSCOPE
s.click.aliexp...
usa.banggood.c...
amzn.to/4dzBA9G
TOMLOV TM4K AF FLEX
amzn.to/3LY0YKs
tomlov.com/pro...
TL866 II+ PROGRAMMER
s.click.aliexp...
amzn.to/3SGKL05
CH341 PROGRAMMER
s.click.aliexp...
NC-559-ASM FLUX
s.click.aliexp...
DESOLDER BRAID (I use size 8045)
s.click.aliexp...
s.click.aliexp...
HX-T100 SOLDER (0.6MM)
s.click.aliexp...
ESD-11 TWEEZERS
s.click.aliexp...
Learn Electronics Repair is now on Discord! Come and join the fun, it's free.
/ discord
If you would like to support this channel
You can send donations
www.paypal.com...
You can subscribe to Patreon
/ learnelectronicsrepair
Or you can click Join to become a channel member
Thank you
Richard
I know these very well and all the other standalone variants... I won't spoil the fun though, watching with interest to see the process and culprit.... 😊
Heya, love the way you trouble shoot these kinds of faults can't wait for P2
It's the journey that is interesting, the destination is a bonus.
Coincidentally I returned one of these this week to its owner, having repaired it after it was dragged off a low table when powered up. Although there's plenty of space inside them to work in, the weight and sheer number of screws is enough to make one swear. The original fault caused by the hard landing was one of the capacitors blew (along with the main fuse), but someone else who attempted to repair it shorted the inner sheet metal shield to one of the main heatsinks - which are live when the unit is running - which blew up some of the semiconductors attached to the heatsink. Dynacord cannot supply replacements for at least some of the semiconductors, and they are universally obsolete and thus not available. Finding suitable replacements takes a while, but it was a satisfying fix. Very helpful that the schematics are available.
Exelente sus videos, gracia y saludos desde Cuba.
I love the way you talk your way through understanding how everything is supposed to work. I often wonder if you still do it the same way when you are not making a video? Or do you just dive in and wing it a bit? Great work!
For mixers and some all-in-one PA mixer amplifiers (e.g. Bose L1 classic) - should charge the customer by the screw and fixing! Sooooooooo many of them!
Having watched all of the video now, there are a couple of things I noticed. There should be a plastic shroud on each fan, to stop the escape of cooling air from where it should go, which is down the length of the main heatsinks, the other thing is a bit odd, though maybe related to the protection fault - on switch-on, the fans should ramp up, then after a couple of seconds stop again, only coming back on when there is enough heat to call for forced cooling. Interested to see what develops 👍
Hi there, always enjoy your videos, the powermate mk2 are the best of the best, have one myself excellent sound quality and power, theres some TO92 package transistors near to the left fan which are the time delay and protection circuits etc... the last fault ive come across stuck in protect mode is one of them transistors was leaky, cant remember which one though but have a look in that area, hope it helps, look forward to the part 2
Good God, those are some beefy components!!! that transformer is MASSIVE
I got a lot of information from the videos of your UA-cam channel and it is very helpful for me, Is there a possibility of contacting you so that I can get information about other problems in the future?
I’m thinking a high value resistor when that positive line was not discharging, after turning off.
Alternatively you could have chosen to investigate the problem the customer brought it in for, and the mixer was also telling you what was wrong. By doing very basic checks as you did then go and find out if the problem is the protect circuit itself is faulty or its telling you the truth and there really is DC on the outputs. When and LED shows a fault condition (customer is paying hourly) go investigate the fault. You haven't even explained to the viewers what "PROTECT" is !.....IMHO
The intro is basically for people like you.
Go back and listen to it maybe you might comeback to delete what you commented above.
@@AyansolaAfolabi :)
@andymouse That's a good point.... but I'm sure he's explained what he's going to do to the customer and will charge appropriately. These are interesting amps to repair and can lead you a merry dance on many occasions even when you've identified the area that the fault is in so even though I've worked on many of these I'll still enjoy watching this.... 👍
🤫
@@johnnybravo505 I agree ! as long as the customer is aware that the video ' took the coast road ! ' and he isn't being charged by the hour ! because he isn't paying to watch somebody check a fuse. You could argue that if a video is made from the repair then no charge :)