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Search: Posts Made By: stj
Forum: Equipment Usage, Soldering, Techniques, and Reviews Yesterday, 06:43 AM
Replies: 9
Views: 222
Posted By stj
Re: Recommendations of quality soldering station and (separate) hot air station

Aixun reviews
https://www.youtube.com/c/Sdgelectronics/videos
Forum: Troubleshooting TVs and Video Sources 01-20-2022, 03:29 PM
Replies: 53
Views: 538
Posted By stj
Re: Vizio TV SMPS Flucuation Output Voltage

opto isolator(s)
feedback sets the output, if the feedback is screwed then the output will be screwed.
Forum: General Computer & Tech Discussion 01-20-2022, 09:38 AM
Replies: 8
Views: 201
Posted By stj
Re: Universal LGA775 VID mod question.

there is a good chance this wont work,
the bios will identify the cpu revision and model and then check it's microcode tables for a match.
no match - no bootup.

so if you want to do something...
Forum: General Electronics Technical Discussion 01-20-2022, 09:32 AM
Replies: 2
Views: 84
Posted By stj
Re: recap soundblaster awe64 ct4520

tantalum or rubycon YXF series will be good.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-17-2022, 05:52 PM
Replies: 6
Views: 144
Posted By stj
Re: Desoldering station/gun above ZD-915/474A++ ?

because if they fail it may blow the control chip in the psu.
Forum: General Electronics Technical Discussion 01-17-2022, 01:55 PM
Replies: 9
Views: 196
Posted By stj
Re: flipping adapter on external HDD got it "alive"

because the contacts in it are bent or shit? :D
you need to check that - if it happens with a high current device it could arc and catch fire.
Forum: General Electronics Technical Discussion 01-16-2022, 09:13 AM
Replies: 10
Views: 206
Posted By stj
Re: mpxgmf 40/100/21 safety?

it is to stop the motor from jamming radio & tv signals
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-15-2022, 06:50 PM
Replies: 9
Views: 222
Posted By stj
Re: Recommendations of quality soldering station and (separate) hot air station

there are lots of JBC compatable stations now - some have great reviews.
unlike a review i saw for the pace
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-15-2022, 12:13 PM
Replies: 7
Views: 184
Posted By stj
Re: Fluxes in Europe

TME wont ship to the u.k. anymore, and probably not malta either.
fuckers.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-15-2022, 12:11 PM
Replies: 9
Views: 222
Posted By stj
Re: Recommendations of quality soldering station and (separate) hot air station

get a JBC or a clone,
you will save a fortune in tip cost compared to the pace crap.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-15-2022, 12:10 PM
Replies: 11
Views: 602
Posted By stj
Re: OK SA-1000 Soldering Station

the RoHS solder isnt that much higher in temp,
the problem is china is using a lot of solder that is almost pure tin - maybe even recycled.
it doesnt like to reflow no matter what temp you use.
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-14-2022, 10:28 PM
Replies: 7
Views: 184
Posted By stj
Re: Fluxes in Europe

so you want to put it ON things, not run it under large BGA's.

then i use this:
https://www.aliexpress.com/item/32864986454.html
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-14-2022, 12:23 PM
Replies: 7
Views: 184
Posted By stj
Re: Fluxes in Europe

liquid? paste?
flux to do what?
Forum: General Computer & Tech Discussion 01-14-2022, 12:20 PM
Replies: 9
Views: 272
Posted By stj
Re: Unlock password protected SSDs

there is a command that makes drives factory-reset,
you need to send it direct - no usb adapters, and you probably have to use linux.
Forum: Troubleshooting Game Consoles & Other Weird Devices 01-13-2022, 03:30 PM
Replies: 15
Views: 5,306
Posted By stj
Re: Sony Phat PlayStation PS2 power supply repair

ps2 will power up without the laser.
check the fuses on the board - there is atleast 7 of them.
Forum: General Electronics Technical Discussion 01-13-2022, 09:05 AM
Replies: 3
Views: 111
Posted By stj
Re: (Multiple Spark Discharge) MSD 6AL Q204 required

try cleaning it.
what are the others on that pcb edge?
Forum: General Computer & Tech Discussion 01-13-2022, 09:02 AM
Replies: 6
Views: 203
Posted By stj
m$ recommend you switch to LibreOffice

indirectly :D

https://www.dailymail.co.uk/news/article-10396809/Microsoft-introduces-new-woke-feature-Word-tries-suggest-PC-alternatives.html
Forum: General Computer & Tech Discussion 01-12-2022, 03:03 PM
Replies: 2
Views: 72
Posted By stj
Re: Lenovo think center 73M Desktop shutdown issue?

it's not doing some stupid shit in the settings like going into "sleep mode" is it?
Forum: Troubleshooting Power Supplies and Power Supply Design 01-12-2022, 02:58 PM
Replies: 4
Views: 206
Posted By stj
Re: 700mv ripple on Akai Sampler linear supply

for switchmode i like panasonic FR,
for linear you just want long life and high ripple handling and 105' is nice.
so you have a good choice there.
panasonic F-something, or rubycon ZL /...
Forum: Troubleshooting Audio Equipment 01-11-2022, 07:30 PM
Replies: 65
Views: 1,491
Posted By stj
Re: Sony ICF-C12W Radio Clock schematics (power)

yes,
remember, in 110v country's the voltage can vary by atleast +-10v so 100-120v
and in 220v country's the allowed variance is worse - 220-250v

the transformer output will vary with it's input...
Forum: Troubleshooting Audio Equipment 01-10-2022, 01:47 PM
Replies: 5
Views: 186
Posted By stj
Re: Yamaha A-520 HiFi amplifier

first put a resistor and led across the relay coil to see if it's being powered but bad.
Forum: Troubleshooting Audio Equipment 01-10-2022, 12:03 PM
Replies: 2
Views: 142
Posted By stj
Forum: Troubleshooting Power Supplies and Power Supply Design 01-09-2022, 10:14 AM
Replies: 4
Views: 206
Posted By stj
Re: 700mv ripple on Akai Sampler linear supply

i would re-cap the power section,
those caps are so old i cant find a datasheet!
they have a 1000hour rating and are 85' listed.

also, they are "audio grade" and shouldnt be in the power section...
Forum: Equipment Usage, Soldering, Techniques, and Reviews 01-09-2022, 10:03 AM
Replies: 1,108
Views: 161,061
Posted By stj
Re: ESR meter upgrades

i do M builds for the TC1 with a rotary encoder and 20MHz if anybody wants it posted.
Forum: Troubleshooting Power Supplies and Power Supply Design 01-09-2022, 09:58 AM
Replies: 14
Views: 326
Posted By stj
Re: Whirlpool washing machine L2158 control board

maybe the chip has the same weakness as TOPswitch's and oscillates itself to death if the startup cap is poor.
Showing results 1 to 25 of 500

 
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