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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: DVD recorder diagnosed - Bad cap, but not bulging!
Cool video. Very good descriptions/explanations too. -
Re: DVD recorder diagnosed - Bad cap, but not bulging!
That'll help someone. Good onya having a go.Comment
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When I originally started with my DVR recorder it had 4 individual switching switching power supply’s that were sh*t so I bought a 7 amp 12 volt switching power supply and modified the output plug and put a four output power supply cable to match the input power supply cable inputs
Which worked for over 14 years until a few days ago when the cameras went dark no picture anymore well it turns out now the switching power supply has stopped working altogether now so I have to troubleshoot what has happened to this power supply more later on today what I found
This... -
Fixed a 10yo HP inkjet with a bulging cap on the digital computer power rails (1 to 5V). Unstable voltages causing these inkjets to not boot properly or crash quickly. Seems like more and more of these are showing up nearing the 10 year mark. Board design seem to look similar for many of these printers.
https://h30434.www3.hp.com/t5/Printi...t/true#M99792202-03-2025, 09:50 PM -
Just typical LED bar failure repair but discovered a couple of things worthy of posting
PSU had a bulging cap (470uF 25V). Likely AC/DC bridge rectifier filter. Have seen a ton of 470uF bridge rectifier filter failures on a bunch of difference devices (not just TVs) Stock up on 470uF 25v 35v
2nd thing worth of note is after all the work to replace edge lit LEDs. Discovered 2 LEDs with phosphor coating differnce produing slightly differnet color temp. Result on edge lit TV = dark veritical band
Can't detect when testing the LED bar along...
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Hello, I have 2 voice recorder to repair. Same issue : whistle in the speaker, but the sound is good with the headphones (via jack audio plug).
Built in year 2000, I guess that could be the (yellows) capacitors ? What do you thing about that please ?
(I found the specs : tantalum-polymer capacitors 100uF 10v 10%.)... -
I have recently inherited a Panasonic DMR-EZ48V DVD/VHS combo after my dad died. I tried to record a DVD with it and it worked for about 5 mins before it suddenly stopped. Since then it just keeps making a noise like it is trying to read a disk but then gives a 'no read' error message. I have tried numerous DVD's and it is definitely the recorder that is the problem. I did find a youtube video showing that capacitors on the power board were a common problem on these and so I went ahead and replaced the capacitors but it is still doing the same thing. I now think that it could be the laser that...
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