yes but if monitor no display anything i no want spend long time try fix because i dont know how and maybe it not even fixable or worth fixing...we will see...this is a future project
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Last edited by shelby5041; 07-18-2024, 05:57 PM. -
can someone confirm...on my version trs80 there are 2@ .1uf caps
there is no .01uf cap as someone mentioned
im going to be ordering the 2 caps soon
i only see 2 RIFA caps...1 on each power board.Comment
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hi..apparently my trs80 does not have a rifa cap at c2...see pic...my trs80 has 2 power supply boards that appear identical so i will order 2@c21 caps...Comment
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i installed new caps ....powers on ok but monitor still blank...i can see very faint thin horizontal lines that are close spaced at top and get farther spaced tiwards bottom of screen.the lines are white colored.....the monitor is pwring on for sure....just blank....redwire ill try your procedure this week and see if i can get some kind of prompt on the screen.Last edited by shelby5041; 09-08-2024, 08:10 PM.Comment
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i did the break key and orange button and nothing shows on screen...just a few thin white horizontal lines...monitor could be bad or the machine is getting pwr but not actually booting up..bad ram..bad cpu etc...i may try selling as is or part it out .Last edited by shelby5041; 09-13-2024, 09:07 AM.Comment
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Hi to all, I was diagnosing 2 smoke detectors that experienced power surge. I opened one up and found a weird fuse/resistor, which now has open circuit. I can't find this part.
Forgot to mention they both light up and I believe the test function works, but when I put smoke to them no alarm!
Any help in this regard would be greatly appreciated.
Thanks,... -
Not sure if this is the best section, so feel free to move it. I'm tasked to get some "safety device" in case something goes wrong to insure a dry sauna does not burn again. This time the wall with stove on it has been covered with mineral insulation material as well as linings. (Harvia states their stove can be mounted directly on wooden walls! get that!
).
Idiots wired extra (UTP, get that second time
) cable to the sauna ceiling. Is there ANY smoke detector which could survive on the ceiling with up to 100 (120?) °C there, or just all those house toys...
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Hi.
BacCaps forum is awesome - thank YOU ALL for sharing knowledge!
This is about DONG YANG PSU BN44-00195A failiure in Samsung 245BPLUS. It started with bang and smoke from the back of LCD. Downloaded diagram BM44-00192A - a bit different but I will use all parts names from this diagram [and real PSU].
BIG CAP CP801 had 315V, on standby pin 5,2V. After shorting S_B ON (through 3,3k ohm resistor) 24V and 5,3V were missing, on CP801 was 312V.
RM801 [real PSU: RM801 - 0,22 ohm 1W] - FAIL
burned, measured 10M ohm.
QM801 [real PSU:... -
Hello,
I have a DJ mixer here, an Xone:92 by Allen & Heath.
When I turned it on, only magic smoke came out, so I turned it off again.
An optical troubleshooting has brought me quite fast to the
source of the smoke: two resistors look disproportionately black (see first pic)
Those are R73 and R74 on the master PCB. See second pic for the corresponding page of the service manual.
Behind those resistors are five OP-Amps (U3, U4, U5, U6 and U9).
My thought is that one (or more) of those is defective. I've measured... -
Hi guys,
I cleaned the microwave, but now it makes a rapid clicking sound, then smoke appears. I had a look and it appears to be coming from the front touch panel. I have a feeling a little water got into it(I saw very little on the relays but nowhere else), but smoke is not a good sign. I have a video and come pictures.
I was going to desolder and open the relays but Im not sure if you can. It also appears a couple of resistors and a diode are showing signs of heat/burn.
Res #1 - 470Ω
Res #2 - 330Ω
Zener Diode (unknown value/model)...
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