Questions tagged [replacement]

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15 views

Looking for a pin-compatible to LT1013DID rail-to-rail in/out op-amp

I have designed a circuit using LT1013DID (SOIC 8 footprint) op-amp and while Spice simulation worked, I forgot about input common-mode voltage limit (which it seems is not simulated) and thus need an ...
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1answer
85 views

Help decode/identify/guess this blown ceramic capacitor?

My monitor's backlight died (can still see screen with torch). Found a blown ceramic disc capacitor. The problem is it's partly exploded over the values. I'm hoping people here might have a better ...
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46 views

How to find a transformer for a dry cleaning machine?

My dad asked me to help him find a price estimate and figure out the ordering process for a new transformer for his dry cleaning machine. He's not that fluent in English and isn't too comfy using the ...
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3answers
565 views

What's the right replacement for vintage “glass cloth insulation” that transfers heat in Variac?

I ripped apart a broken 1950s-era Variac autotransformer to diagnose an internal short in the core, and found a layer of gooey insulating fabric mat between the coil/taps and the mounting plate: The ...
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1answer
80 views

Can I replace one with the other? L7805CP, L7805CV

Are those chip equal in a circuit? L7805CP, L7805CV Can I replace one with the other to try to fix a broken circuit board?
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16 views

Vizio m80-c3 powerboard

I'm wanting to replace 4 su'scon 1000uF 16V capacitors. I believe they just failed due to having bad ripple rates (internet searching). They are also marked 1519(m). I found some Panasonic fm low ...
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0answers
112 views

Is there are better component to use rather than multiple diodes?

I am a long time computer programmer, but am fairly new at creating my own circuits. The project I am working on currently is functioning properly, but I thought there may be a more elegant solution. ...
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2answers
96 views

Can I safely put a 9 volt battery across 12 volt auto battery

To change out my automobile battery some sites say, to save auto memory devices, I should procure a gadget using a 9 volt battery which you hook up to the auto battery cables just before you undo them ...
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42 views

Substitution for 0.1Ω 2W metal film resistor?

I'm attempting to repair a Pure Sine Wave Inverter. I need to replace a damaged 0.1Ω 2W metal film resistor. I found the part that should work on digitkey: https://www.digikey.com/en/products/detail/...
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1answer
42 views

Help finding a replacement part? [closed]

I have a subwoofer that my friend and I found so I do not know too much about it. When I was transporting it, it fell and one of the knobs on the front was broken. I took it apart to see if I could ...
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1answer
52 views

Need help with weird audio wire colors

I would like to replace my broken earphone's 3.5mm audio jack. However, I am not able to indicate which wire is the right (red) and which is the left (green). I see the red and green wires but they ...
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1answer
73 views

MOSFET Rds(on) development

I'm considering making a replacement solution for an automotive fan output stage. The original part gets quite warm and tends to be unreliable - it's cooled with massive fins and sits directly in the ...
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1answer
41 views

IC replacement 24LC16B-I/P

I apologize for my ignorance, but does a brand new IC need to be programmed or are they already factory programmed ready to be solder? I have an M-Audio 49 MIDI controller piano with a bad 24LC16B-I/P ...
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1answer
110 views

Vintage Pocket Radio Transistor Replacement is Oscillating

I have an old pocket radio which uses silicon NPN transistors for the mixer and IF stages. I replaced 2 of the IF transistors and the unit functions, but the new transistors are faster than the old ...
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1answer
81 views

What are the important specs to look after for IGBT replacement?

I have a MC2100ELS-18W motor controller and after inspection found that the IGBT is shorted, the part number is IRGPC40K I suppose this is a discontinued part and I do not want to buy from China and ...
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1answer
160 views

How do I replace this bike light cache battery?

This Luxos U dynamo powered bike light has a cache battery that provides backup power for the light when the dynamo isn't providing power, and it also provides power to smooth the USB charging that it ...
3
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2answers
1k views

3.5mm Audio Headphone Jack

I have a broken headphone audio jack from an electronic keyboard. With the jack broken, the speaker audio no longer functions. The manufacture no longer supplies the part as it has been discontinued ...
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1answer
62 views

-30V power supply for HTS6520

Story Received a Philips HTS6520 for free however the subwoofer (and remote) is missing, no cables at all, so unable to use it because the sub also provides the power (read on to see what I have done)....
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1answer
70 views

Suitable Substitute for this Varistor MDC Z750 / 40

I am in the process of restoring a vintage EZGO Golf Cart and have came across a component I am unable to locate within the generic golf cart electrical diagram. This varistor is from a 36 volt DC ...
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0answers
74 views

Input voltage on transformer

I’m replacing a transformer on hot tub. Markings on original were obliterated from rust. New transformer is marked as follows. 0 v blk wire, 115 v white wire, 230v red wire. The transformer receives ...
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1answer
67 views

Help finding replacement parts? [closed]

My mum's sewing machine released its magic smoke, and while I'm reasonably adept with a soldering iron, I don't have sufficient experience with electronic components to do this all on my own. I have ...
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2answers
113 views

Altium PCB messy Components Placement

I have a problem with PCB. When I click Design -> Update PCB Document my components are passed to PCB in a messy way. I couldn't solve this problem. Is there any way to solve this?
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1answer
249 views

How can I replace this SMD diode?

This "742 PG" seems found to be nowhere in any place. What is the best SMD diode that can replace it? It is from Lenze PCB for the 8211E variable frequency drive. Please show me the way to ...
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1answer
74 views

How does a USB-C to Lighting Adapter work / How to replace them? [closed]

So, I am fairly new here, and to be honest I have no clue if this is the right place to ask. I am currently thinking about replacing a Lightning port with a USB-C port, just for power supply. At first ...
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2answers
63 views

Replacement for antique fan capacitor [closed]

Could anyone recommend a replacement capacitor for an sk, mp capacitor 2uf 350v?. This one was used as a starter for an old fan. Thanks.
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3answers
149 views

Replacing the capacitor on an old Philips amplifier

My Philips amplifier broke down (model FA153) and my friend told me it's likely the capicators have worn out (they were produced in West Germany ;)) I am quite the layman in electrical engineering, ...
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1answer
77 views

Which nichrome wire would use to recoil this heater element

I need to re-coil this. Which nichrome wire would you use? This is a fan speed controller. For perspective the place width is about an inch and there are two plates with about 15 winds each. This will ...
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0answers
164 views

Replacing a Li-Ion battery with a capacitor and power supply in a bluetooth speaker

I have a Philips BT3500 speaker with a dead Lithium Ion battery. I want to be able to use the speaker without the battery - using just the power supply. It used to work for some time with the usb ...
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0answers
106 views

Replace capacitor with open circuit or short circuit?

We have this circuit, where potential difference between capacitor plates is zero, and no current flow through it too. So I want to draw a simplified version of this circuit where is composed of just ...
3
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2answers
146 views

Is a 2N3906 an appropriate replacement for a BC158(B) in audio amp circuit?

On a long but educational process repairing a vintage German stereo. I have identified a failed (shorted) PNP transistor in the power amp section. (Schematic with highlight is below.) The part on the ...
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1answer
71 views

Can anyone help to identify this blown MOSFET? Top markings seem to include F50, “ON” in a circle, 3N and “RE4T” in a circle

I am trying to repair a PCB out of the welder. One of the problems I have found is a blown MOSFET. I have tried searching for a replacement with no luck, as I don't have a complete code. I have posted ...
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1answer
66 views

How do I replace or fix this electronic chip? [closed]

I have a device that runs on a 3.8V Li ion battery. A few days ago it stopped working. I screwed it open, took out the battery, and could identify this seemingly fried (?) resistor on the PCB: Am I ...
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0answers
76 views

Trying to identify SMD with morse coded? markings

New here and first question: Any idea what this component is and it's specs? Markings look like morse code which reads "XTK" and what looks like .A. It is part of a circuit for LED, back lit, press ...
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1answer
184 views

Replace amplifier IC with a class D amplifier (AN7133N with TPA3116 board)

Today I received this nice 90's Panasonic RX-CT900 boombox in the mail. The specs claims it is 2x60W PMPO (PMPO b**llsh*t throw-of- a-cliff specification) but in fact it is just 2x5.5W RMS (Panasonic ...
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1answer
106 views

Replacement for E402/J402/LS3954 JFET?

I've come across old synthesizer schematics for an oscillator which makes use of a couple E402s. I am looking for a suitable replacement, and I don't think the specs have to be spot on at all, but I ...
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1answer
41 views

Removing single 1212 (3030) LED

Is there any way to remove and replace a single 1212 (3030) LED from a heat-sink board as shown in the images?
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1answer
1k views

Desoldering a through hole capacitor with weird terminals

Apologies in advance if this is the wrong place to post this question. So I've just RGB modded an old CRT TV, and now I'm trying to replace a series of capacitors to hopefully fix some screen ...
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1answer
94 views

Antenna connector placement

I am currently redesigning a PCB utilizing the Xbee 868 Mhz module with external antenna connection on the pad ( https://www.digi.com/products/embedded-systems/digi-xbee/rf-modules/sub-1-ghz-modules/...
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0answers
851 views

Battery Replacement - 3 pin Connector with 2 wire battery

I need help on using a 10k fixed resistor. I connected the red and black wire but I'm not sure what to do with the white wire. I know that this is for the thermistor. It is not charging if it is not ...
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1answer
31 views

Replace IRF7101 with IRF7301 power mosfets

I need to replace a burnt IRF7101 (datasheet link) power MOSFET. Is IRF7301 (datasheet link) a good equivalent replacement component? I cannot find the old one in any local store and I need it fixed ...
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2answers
58 views

Equivalent to AO7400A MOSFET

My Dell laptop (Inspiron 15 7559) has a dead AO7400A MOSFET, and I've been looking all over for a replacement, but with no luck. Does anyone know an equivalent to it, or maybe somewhere I would be ...
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1answer
160 views

Replacing momentary button/switch on monitor control panel

There is a button that toggle inputs on my monitor and the very thin top dome/bubble came off and not I can't really press it to work, though if I use a flat head screwdriver (the diameter of the ...
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0answers
635 views

Replacing tip on Weller WHS40 soldering iron?

I've had Weller WHS 40 soldering station for some 20-ish years or so, used purely as hobbyist few times a year mostly for work on simple through-hole components. Lately, the (still original, never ...
2
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3answers
702 views

Replace/refresh 7 segment display of vintage 80's clock radio

Past two weeks working on this clock radio because I love the looks of it and it is also pretty rare (it must be restored in original condition or better). Fixed almost every non-working feature such ...
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1answer
342 views

Can a 74AHCT IC be a drop-in replacement for 74HCT IC

I have a circuit in which I interface a radio module running on 3.3V indirectly from a 5V supply. I use a regulator to provide the 3.3V module VCC and the data is exchanged between both circuits ...
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2answers
44 views

Echo in voice to the caller while receiver with headphone hving wire replace [closed]

Hi I just replaced the old wire in my headphone with new one.But while using headphone the caller hears the voices with his own echo but while me having headphone on has no issue of echo can speaks ...
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0answers
65 views

Why is my replacement triac not working?

I have a Hakko FX-888D soldering station which stopped heating the iron. I found out that the triac (which is a BTA06-600b) went bad so I went ahead and replaced it with a BTA12-600bw. It didnt work. ...
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2answers
421 views

Replacing smoothing capacitors in vintage guitar amplifier without datasheet

I'm in the process of servicing my Carlsbro stingray super combo amp and whilst disassembling I noticed that one of large caps (I assume smoothing) has started bulging and leaking. Ive tried ...
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0answers
49 views

How to safely replace NiCD/NiMH with Li-ion in a small electric screwdriver? [duplicate]

I'd like to repair and re-use a small Bosch electric screwdriver. It currently has a battery of 3 small AA-type rechargables (unmarked cardboard wrapping) that has almost the same occupancy volume of ...
0
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1answer
277 views

Replacing Projector Fan - Wiring Color

An old Sony VPL-CX11 stopped working because one of the fans (the lamp's one) was so rusty that couldn't rotate. In the front of the projector there are two fans, one for the lamp and the other for ...