Questions tagged [replacement]

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Can I use LQFP on same TQFP footprint?

I need to order a 32 pin LQFP chip and replace it with another 32 pin TQFP chip so is it ok to replace it or it won't be compatible? The chip is an STM8S003K3 MCU
Hazardous Voltage's user avatar
2 votes
1 answer
241 views

Replacing 8 AA batteries with 3 186500 batteries

My old R/C toy car, can be powered with 8 1.5V AA batteries or 8 1.2V Ni-Cad Batteries. Currently I try to use 3 186500 Li-Ion batteries instead. I planned to use a charger- and protection module ...
jonas's user avatar
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1 vote
1 answer
87 views

Help find alternative AC capacitor replacement for refrigerator compressor [closed]

My mini fridge is broken and doesn't blow cold air. I'm suspecting it's the capacitor because it tested bad and I don't hear the compressor humming when turned on (all fan runs). I wanna try replacing ...
TacoTanium's user avatar
0 votes
0 answers
23 views

WR91700 datasheet or pinout

After several attempts trying to find out the datasheet or pinout of WR917O0 IC, I only have found a service manual of PSR-S710-S910 Yamaha workstations. The IC is included in the list of components ...
Fran67's user avatar
  • 1
0 votes
2 answers
148 views

MOSFET transistor replacement for Proform T7 Treadmill

Treadmill motor turns for a second and immediately stops. After researching issue, looks to be a blown IRFP250M IOR P039J 20 8J. My question is, I'm having trouble finding a replacement that includes ...
Billy's user avatar
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0 votes
2 answers
58 views

How to choose a replacement battery

I want to replace a battery to an old electronic but the company went out of business and I cannot find the same one and the one I have doesn't last long at all. I would love to replace it with a ...
mrg's user avatar
  • 1
2 votes
1 answer
51 views

Disc capacitor ratings for replacement

I'm repairing some vintage electronics, and there are a handful of cracked ceramic disc capacitors that need replacement. They're mostly for decoupling, but I want to make sure I'm replacing with ...
BZo's user avatar
  • 1,575
0 votes
0 answers
86 views

replacing NEC/TOKIN 0E907 capacitor under laptop CPU with 4 2R5TPE330M7 capacitors

as the tittle says i want to replace a failed NEC/TOKIN 0E907 capacitor under a laptop motherboard's cpu with 4 2R5TPE330M7 capacitors but im new to things like these and i want to know if the 990uF ...
cbpfresh's user avatar
0 votes
0 answers
62 views

Is an RFP50N06 a valid replacement for an IRF50N06 MOSFET?

I recently blew a MOSFET in my car audio amplifier because some water got on it. The MOSFET used in the amplifier is an IRF50N06. I was wondering if the RFP50N06 MOSFET would be a good replacement ...
developerjon's user avatar
0 votes
0 answers
43 views

Repairing a control board for an automatic gate opener, it has a faulty trimpot 100k 906k

FAAC control board 12 V has a faulty trimmer (single turn rotary carbon). I could not find the exact values in a replacement part. Can I use one with the values 705 100k? It is used to adjust the ...
Tom Williams's user avatar
2 votes
1 answer
86 views

Fixing runaway sewing machine - blown transistor?

Disclaimer: I know very little about electronics, but I'm willing to learn as I go. My experience consists of playing with Arduinos and fixing a lamp by soldering a replacement switch. Please be ...
Bad Request's user avatar
2 votes
1 answer
300 views

Replacing current shunt resistor with different value. Is there a problem?

I have Nitecore UM2 (2 slot) battery charger whose current sense/shunt resistor of 0.1 ohms R100 (package 1206) blown. I replaced with working slot to see if everything works good and it is. I am ...
Paul's user avatar
  • 58
8 votes
2 answers
612 views

Disconnect vertical tab connector from PCB

I'm trying to replace a PCB, but I can't figure out how to unplug these connectors. They seem to be a "quick connect" style. I've tried tugging on them and wiggling them, but they won't come ...
Brian McCutchon's user avatar
0 votes
2 answers
153 views

Looking for replacement transistor for Branson B52 ultrasonic cleaner

I’m trying to repair a Branson B52 ultrasonic cleaner which has two bad transistors since the wires broke off the transducers. I fixed that up, and noticed when running (barely and would fail the ...
stirringhalo's user avatar
0 votes
1 answer
30 views

I want to replace battery on my Acer Aspire ES1-111 and I'm having hard time choosing batteries online [closed]

-My original battery is AC14B13J---TYP3220mAh/36Wh---MIN3090mAh/34.5Wh---11.4V 3140mAh -The one I found online has the same description as my original battery, but it has an 11.55V 3180mAh. Is it okay ...
Ajova Memes collector's user avatar
1 vote
1 answer
118 views

Identify a replacement 12-pin ribbon cable push in socket

I need to identify a replacement for this 12 pin flat cable connector. I don't seem to be able to find the right google terms to come up with a useful result. A 12 pin AWM 2896 cable plugs into this. ...
Drise's user avatar
  • 133
6 votes
4 answers
1k views

Transistor: What is "epitaxial planar type"?

I need to replace a (panasonic) transistor and read the datasheet to possibly replace it with something else. However in the datasheet they call this transistor a "Silicon NPN Epitaxial Planar ...
Codebeat's user avatar
  • 1,317
-1 votes
2 answers
181 views

SOT23 package jumper [duplicate]

I’m replacing some components on existing PCB, and I need to replace transistor in SOT23 package with a jumper. Problem is that none of the standard jumper packages are not suitable for more than a ...
Nikola50's user avatar
17 votes
4 answers
5k views

Why do cordless tool batteries have a circuit board connected?

The other day I got tired of buying replacement 18 V battery packs for my power tools (drill, ripsaw, etc.) and I thought to myself, surely by this day and age the price of lithium-ion batteries can't ...
Alfred's user avatar
  • 189
0 votes
1 answer
264 views

Replacing lost SMD capacitor from another board

I was trying to fix a board and I lost an SMD capacitor. On the diagram it says "10UF/6.3V." I have another board for another laptop and I found these on the diagram, which one is the ...
Osama Gadour's user avatar
1 vote
1 answer
116 views

Replacement relay - slightly different specs

I have an old kitchen range hood whose lighting suddenly stopped working. With my limited knowledge and capabilities in this field, I was able to access the PCB just to see that the power relay is ...
J. Hrstka's user avatar
0 votes
0 answers
76 views

Dewalt radio power supply

Can someone tell me what chip U2 is in this picture?
darren atkinson's user avatar
0 votes
0 answers
84 views

2SB1241 Transistor replacement

I have a Peavey PV8 USB Mixing console which doesn't turn on anymore, the problem is a burned PNP switching the +15V rail. The Marking of the transistor is B1241 but due to the 3-SIP package im pretty ...
Thorbijoern's user avatar
1 vote
1 answer
103 views

If an IGBT's collector-emitter max voltage is 600 V, Do I need 1 kV rated capacitors on the output side?

I'm fixing this solar PV diverter (pictures attached at the bottom of this post), other than the traces it has a blown IGBT and 2 capacitors. The datasheet for the IGBT (model FGH40T65SPD) is here:  ...
CptChronic's user avatar
1 vote
1 answer
157 views

Can I replace an SRAM chip with a faster one?

I need to replace an SRAM chip with an access time of 25ns (AS7C256-25JC). How important is the access time? Can I replace it with one with a lower access time, such as the AS7C256A-20JC at 20ns, or ...
Daniel Hedberg's user avatar
0 votes
0 answers
27 views

Operate servo based on AC voltage: solenoid replacement

In short, I’m trying to find a substitute for a solenoid in a system that was operating based on 120V. The servo needs to rotate a little shaft about 45 degrees when the voltage comes on, and then ...
TheLabCat's user avatar
  • 101
0 votes
1 answer
491 views

Fried diode - need help buying replacement

Full disclosure, I'm not an electrician by any means. My dad was an electrician in the Navy, but we lost him last year. Since I don't have him to look to anymore, I'm hoping I can find some help here. ...
DC3's user avatar
  • 11
3 votes
1 answer
389 views

Have cross reference books ceased to exist?

Back in the "good old times" when I had a device fail I could grab my trusty old transistor cross reference book and find a replacement part with the same footprint and comparable parameters ...
kruemi's user avatar
  • 3,004
1 vote
1 answer
184 views

Replacing 12V 19AH lead acid battery with 12V lifepo4

I have a Stanley PPRH7DS battery charger that came originally with a 12V 19AH lead acid battery. This battery has since given up the ghost and I am looking to replace it. Last summer I constructed a ...
Varwulf's user avatar
  • 11
2 votes
1 answer
396 views

What does "FB" for a fuse mean?

I have a blown GE 250v 20a FB WB27X27316 that I need to replace. Unfortunately, GE doesn't have them in stock for another 3 months. I want to replace it with another off-the-shelf fuse, but I don't ...
Maximus Martinez's user avatar
0 votes
1 answer
75 views

Defective Transformer Replacement

I've been working on repairing a TV psu, and discovered that the transformer in it is faulty (reading O.L. on every combination of pins except for diagonal in ohms mode on the DMM) I've been looking ...
Koen Van Den Elsen's user avatar
0 votes
0 answers
51 views

Help with identifing replacement parts [duplicate]

I am still learning about electronics and was hoping for some help regarding two components I am trying to replace (due to a faulty connector and my stupid fault). With the help of @Lundin, they ...
Mike_D.'s user avatar
  • 19
1 vote
0 answers
69 views

Finding replacement battery

I would like to revive an older gadget (GT-100 GPS tracker) that is still functional but has a dead battery. However, I am unable to find detail about proper battery type. The original battery says ...
Jan Koupil's user avatar
1 vote
0 answers
137 views

eMMC chip change. Does not work for unknown reason

Because of the chip crisis, I had to use (the only ones which were available at the time) different eMMC chip. Originally it was MTFC16GAPALBH-IT, but I have temporarily replaced it with MTFC4GLWDM-4M ...
0___________'s user avatar
  • 2,488
0 votes
1 answer
278 views

Need help with a replacement thermistor

I recently bought a used IKEA ceiling light however when getting it home noticed that it seems the live wire is connected to a thermistor? which then has another short wire where you connect to mains ...
bendpsmith's user avatar
0 votes
0 answers
591 views

MOSFET identification for hoverboard repair - markings SW FK2J3 95N68A

I am trying to fix a Jetson Plasma hoverboard. I have a removed a few MOSFETs that I believe have failed. I have searched Digikey and Mouser and have been unable to identify a replacement part. Here ...
robotdan's user avatar
  • 101
0 votes
1 answer
92 views

What do you test when changing parts [closed]

Let's say some parts within one of your products are discontinued. You already have a replacement that seems to fit from specifications. What tests do you usually conduct to verify proper operation? ...
NoiseEngineer's user avatar
0 votes
2 answers
2k views

What do I have to look for when replacing a MOSFET with a different model? [duplicate]

We are currently repairing the memory rail of a GPU and because a MOSFET burnt out, we would like to replace it. The issue is, that we only have one that is a similar model, namely we would like to ...
WhatAMesh's user avatar
  • 113
1 vote
0 answers
144 views

Cree LED problem

We have a production circuit of 24 series/parallel LED arrays. Blocks of LEDs fail on power-up. Has anyone seen this before? The sequence of events is: An LED tests as bad in circuit. LED is removed ...
Alex's user avatar
  • 11
2 votes
2 answers
540 views

Replacement for low resistance JFET current limiter?

A classic way to protect opamps from excessive input current and still preserve a low source resistance (for noise reasons) is to use dual JFETs in combination with rail-clamps internal to the op-amp. ...
tobalt's user avatar
  • 18.9k
1 vote
2 answers
337 views

Neon bulb lamp replacement for surge suppression

I'm restoring an HP 141T and it has a broken neon lamp which is used I believe as surge protection in the following configuration: On the right is the CRT. I believe the only purpose for such lamps ...
cosenmarco's user avatar
1 vote
1 answer
99 views

Replacing 10uF tantalum capacitors with X7R in ADM2587E circuit

I'm working on some device with isolated RS485 based on ADM2587E transceiver with integrated high frequency isolated DC/DC converter. This IC is a bit tricky if you need low EMI, because DC/DC ...
Kamil's user avatar
  • 5,926
0 votes
0 answers
145 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 ...
Klemen's user avatar
  • 15
0 votes
1 answer
206 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 ...
David C. Bishop's user avatar
6 votes
3 answers
621 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 ...
BZo's user avatar
  • 1,575
0 votes
1 answer
194 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?
xxORVARxx's user avatar
1 vote
2 answers
187 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. ...
Brian McCord's user avatar
0 votes
0 answers
88 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/...
c4am95's user avatar
  • 1
0 votes
1 answer
43 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 ...
Steve's user avatar
  • 1
0 votes
1 answer
898 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 ...
user3659993's user avatar