Questions tagged [replacement]

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2
votes
3answers
117 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 ...
1
vote
1answer
60 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 ...
0
votes
2answers
38 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 ...
1
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0answers
42 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. ...
3
votes
2answers
147 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 ...
1
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0answers
39 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
votes
1answer
40 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 ...
3
votes
2answers
812 views

Replacing NiMH with Li ion [duplicate]

I have a rechargeable vacuum cleaner with NiMH batteries, 1800mAh and 14.4 volts, 12 cells. The charger is 18v 200mA. The batteries have now died. Can I replace the batteries with 4 cell Li-ion in ...
1
vote
1answer
220 views

RIFA PME271M547 replacement

I just broke my sewing machine (it's an old Viktoria machine about 30-40 years old) and now I am looking for a replacement safety capacitor. The one installed is a RIFA PME 271 M 547 paper capacitor. ...
0
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0answers
37 views

Help identifying LCD

I have an LCD from some farming equipment that I need to replace as it is not working but I am having trouble identifying a potential replacement part. I have tried googling part numbers but with no ...
0
votes
1answer
38 views

enc28j60 ordere wrong resistors

i prototype a small board with ENC28j60. Instead of 49.9 resistors I have ordered by mistake 47R ones, What do you think? will it work? It is only 10M ethernet
0
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0answers
42 views

SMD Detector Microswitch Replacement

One of my son's toys stopped working and I decided to jump in to see what was causing the problem. I found that a number of the smaller detector microswitches had their tabs broken off. Therefore ...
0
votes
1answer
92 views

78L05 as LM2931 replacement for powering 4XXX logic?

I'm building a project I got as PCB+panel, sourcing my own parts. It takes a clock buffered through CD40106 and runs a CD4017. The sequential outputs of the CD4017 create a programmable sequence of ...
0
votes
1answer
90 views

Determine a suitable replacement battery cell for an obsolete product?

A friend of a friend of mine has a prosthetic knee that was developed in 2010 which requires battery packs that are being phased out. He has asked me if there is a way to replace the internal ...
0
votes
1answer
48 views

Replacement part for MAX407 op amp [closed]

Electronics noob here. I need to find a replacement part for a MAX407. I am assembling this circuit and the shop I'm buying from doesn't have the MAX407 op amp in stock. Since I don't understand all ...
1
vote
2answers
298 views

Replacing a safety capacitor

one of my electronic appliances has stopped working after several years of use, it is definitely beyond the warranty period however I've been unable to find any more recent appliances that beat it. ...
6
votes
3answers
1k views

Fuse 125V/4A can be replaced with 250V/4A?

I want to replace a blowed fuse 125V/4A but it is rare to find them. Can I use instead a 250V/4A ? I read at https://www.mojotone.com/support/Knowledge-Base/Is-it-ok-to-replace-125v-glass-fuses-with-...
0
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2answers
61 views

Help identifying replacement regulator

I'm doing some proactive maintenance on a vintage games console from the late 70s. There are a couple of linear regulators which I thought would be prudent to replace whilst I'm at it. Unfortunately ...
0
votes
1answer
91 views

Factors to be considered while replacing dead cells with a new 18650 Li-Ion cell in a Laptop

I am currently using a Lenovo Z50-70 laptop. My battery condition is very poor and it lasts for only 20mins. So I decided to replace the dead cells inside the laptop battery on my own. My Laptop ...
0
votes
3answers
89 views

Is there a 74HCT03 equivalent I can just replace “as is” [closed]

Is there a 74HCT03 equivalent I can just replace "as is"? Of course, it will be better to buy the same exact chip reference but is it always the case? Many chips are equivalents pin-to-pin, right? ...
0
votes
1answer
2k views

Can I change a capacitor with one with a higher capacitance?

Hi I have just joined after lurking a lot because I haven't found an answer that was specific enough for me. I have a Soviet synthesizer (TOM 1501) and it has some odd defects such as clicking noises ...
1
vote
1answer
217 views

Voltage regulator replacement

I have a gadget (a Sonar) that stopped working (doesn’t respond to power on, power led does not turn on) and opening it to look for the typical signs of failure I see an L7818 voltage regulator in TO-...
0
votes
1answer
81 views

Replacement IC for CD4054 [closed]

I'm looking for replacement IC for CD4054, but I can't find any other part that would work like CD4054 in level shifting. What I would need (from CD4054 description): The CD4054B may also be utilized ...
0
votes
1answer
2k views

Is it safe to rebuild my laptop battery pack? [closed]

this is my first question on this website, so please excuse me if I did not follow the guidelines correctly. I have an Alienware 17 R1 (2014) and have been looking into rebuilding its laptop battery ...
-3
votes
3answers
215 views

replacement of JCS2N65F TRANSISTOR MOSFET REGULATOR FOR TV HAIER [closed]

What is the Replacement of JCS2N65F TRANSISTOR MOSFET REGULATOR FOR AFTRON TV HAIER we are in Afghanistan I attempt to much to find but I am failed?
-2
votes
1answer
2k views

Replacement of li po battery with li ion battery [duplicate]

Is it possible to replace a battery for headphones? I would like to replace a 052030 li po battery with a Nokia BL-5C Lithium Ion battery. The li po battery is rated at 130 mAh with 3.7v. The Lithium ...
0
votes
1answer
273 views

Could I replace headphones NIMH battery with Lithium Ion phone battery of the same voltage?

Is it possible to replace a battery for headphones? I would like to replace a 052030 li po battery with a Nokia BL-5C Lithium Ion battery. The li po battery is rated at 130 mAh with 3.7v. The Lithium ...
0
votes
2answers
78 views

Replace lamp in old amplifier

I am trying to replace a fried lamp in my very old amplifier (a Dual CV 1280 Integrated). As I essentially only use the mode that is indicated by the fried lamp, I thought I could just switch it with ...
0
votes
2answers
52 views

Replace in-series incandescent lamps in a makeup mirror with LEDs

This is my first post here. My wife uses a makeup mirror which has 10 x BA9s in series. Each lamp is 3W 24V and since we are in Europe they run on AC 230V nominally (reading off a multimeter is ...
0
votes
1answer
132 views

Replacing half wave tube rectifier with capacitor diode's in series

Very inexperienced. I am a HAM, I just got a HA-10 amplifier that has been modified. The half wave tubes were replaced with a string of Z5U .01 ceramic caps in parallel with 1M ohm resistors and ...
3
votes
3answers
3k views

Replace BSS138 with AO3400A in level shifter circuit

I have to use level shifter circuit to interface MAX31855 with Arduino running on 5V. I found easy to build level shifter circuit at SparkFun website. It is using BSS138 (datasheet) which I don't ...
1
vote
0answers
300 views

Help needed with over discharge circuit on LifePo4 12V car battery replacement

I'm putting together a LifePo4 battery pack with the intention of replacing the 12V lead acid battery in my 4WD. So far, what I've got is the following. 4 x 10 Ah LifePo4 batteries (38120 Headway) in ...
3
votes
2answers
372 views

Looking for replacement or datasheet of this component

I have a burned diode. (I fortunately found an exact same component in the circuit elsewhere to take a photo.) It says 132Y or ...
0
votes
1answer
85 views

Replace button by a component/circuit in 555 diagram

I need your help im crazy with this, i already tried many ways to do it, i need to replace the push button in this circuit by a component or circuit to be activated for a signal of 5 v such as a ...
0
votes
1answer
237 views

Swapping old capacitors for modern caps

I am trying to repair/refurbish an old Farnell L30d power supply, 0 - 30v and current limiting to 2 amps. There are two caps inside, one of which has blown. The caps are Hunts 3132A. Hunts no longer ...
0
votes
1answer
144 views

Help looking for an 220V AC transformer replacement [closed]

My old Philips MC-M250 stereo transformer has died after a power surge. I can't find spares so I'm looking for some compatible replacement. I found a power board circuit in the service manual. AC is ...
2
votes
2answers
248 views

Need help identifying this fuse resistor

(hobbyist here, go easy :P) Due to a loose wire hitting something, I busted my 12v 3.2amps 38 watts PSU and the magic smoke came out. Apparently a fuse popped and ...
1
vote
2answers
63 views

shift whole design in Xillinx FPGA

How can I shift whole my design using ISE(FPGAditor,plan ahead,..) to new placement? I want to no change in routing but change only in placement. Thanks.
0
votes
2answers
3k views

Is it dangerous to continue to remove a slightly punctured phone battery?

I have been trying to replace the phone screen on a Galaxy S7, and therefore had to remove the battery in the process. While doing so, I saw a tiny spark and felt a weird smell. I can't see any damage ...
8
votes
2answers
797 views

Can I fix my monitor? [closed]

I have a monitor that is no longer working. It had an intermittent problem where it would go "pop", the black out for a little while, then come back on. Then recently it went "POP" a little louder, ...
2
votes
1answer
111 views

How to replace TTL PROMs in a design operating at 20MHz

I am attempting to come up with a reasonable way of implementing a design that was intended for cheap computer applications in the 1980s and which was originally designed to use a pair of TTL PROMs (a ...
0
votes
1answer
52 views

Can I replace a NUP2105L voltage suppressor with a NUP3105L?

Someone gifted me a device to read electronic control units from cars and trucks. They gave it to me because they don't use it and they have also removed some components from it to fix another device. ...
0
votes
2answers
2k views

Finding replacement for transistor, what to look for [closed]

I have a schematics that uses the BS270 FET transistor, but I want to know what to do if one is not available or one wants to adapt the schematics to a different transistor What quantities should I ...
1
vote
2answers
940 views

Replacing cells in laptop battery

I successfully opened the battery of my laptop without damaging the case, and now, I want to replace the worn out batteries (2600mAh) with more powerful ones (3200mAh). I know the risks of working ...
2
votes
2answers
677 views

High bitrate IR receiver (TSOP7000 replacement)

After a many days of research I turned to stack overflow once again to help me. I'm looking for High speed IR receiver circuit for laser-tag weapon. Requirements are High noise cancelation, high ...
-2
votes
2answers
100 views

Hyperfast Recovery Diodes replacement [closed]

Can I replace one RHRP15120 diode with two U1560 DIODES IN SERIES used in an inverter filtering circuit without affecting the behavior of the circuit?
3
votes
2answers
234 views

Advice to replace a discontinued battery [closed]

I'm looking for advice to how to replace a Duracell TR163 mercury battery in an old synthesiser I have (Oberheim OB-1 if anyone is interested). The battery is no longer available, at least not in the ...
1
vote
1answer
163 views

What equivalent series resistance (ESR) capacitor should I replace bad one with?

I've got a bad clock capacitor in my original xbox that I'm trying to replace. It's a 1F 2.5V cap however, I'm not sure what Equivalent Series Resistance (ESR) the new cap should be. I see they sell 1 ...
0
votes
0answers
78 views

What comparator is compatible with OPA2132?

I've designed a circuit but realized now - when the 200+ boards finally arrived - that I've made a mistake. Long story short: I made the prototype on a breadboard, using OPA2132 (because that's what ...
3
votes
1answer
966 views

Looking for a suitable transistor for a simple circuit - 50 y/o Junghans clock repair

Trying to find if there is a suitable commonly available replacement transistor for a small circuit card on a Junghans W.707 clock movement (about 50 years old) Here's a picture of the whole thing ...