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Search: Posts Made By: petehall347
Forum: Troubleshooting Power Supplies and Power Supply Design Yesterday, 03:14 PM
Replies: 7
Views: 125
Posted By petehall347
Re: 80v charger blown caps .

ok changed the caps including the blue one . did a good job considering the damage. one trace had to be glued back down .. charged a battery but it only took ten minutes . no smoke and nothing...
Forum: General Electronics Technical Discussion Yesterday, 03:12 PM
Replies: 15
Views: 178
Posted By petehall347
Re: choosing new battery bms

bms arrived today and its pretty small . will fit it anyway and see what the charger thinks of it .
Forum: General Electronics Technical Discussion 04-14-2021, 10:54 AM
Replies: 32
Views: 286
Posted By petehall347
Re: Kind of a different question...

if its 2 pin mains plug try it the other way .
Forum: BIOS Requests ONLY! 04-12-2021, 06:53 AM
Replies: 9
Views: 149
Posted By petehall347
Re: old HP PRESARIO CQ60-202EL with Vista O.S.

is it the correct charger 19v ?
Forum: BIOS Requests ONLY! 04-12-2021, 04:59 AM
Replies: 9
Views: 149
Posted By petehall347
Re: old HP PRESARIO CQ60-202EL with Vista O.S.

will it run with battery removed ?
Forum: Troubleshooting Power Supplies and Power Supply Design 04-11-2021, 05:50 PM
Replies: 11
Views: 212
Posted By petehall347
Re: CP1500EPFCLCD - failure

i take it you tested the fuses ?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 04-11-2021, 05:17 PM
Replies: 6
Views: 219
Posted By petehall347
Re: HP 250 G6 MB LA-E791P overheat and power off

2.2 resistor looks like it been hot
Forum: General Capacitor Questions & Issues 04-11-2021, 03:46 PM
Replies: 7
Views: 479
Posted By petehall347
Re: Do capacitors have maximum allowed amps rating?

they have max temp on them for rated hours ..the cooler they are kept the longer they last
Forum: Troubleshooting Power Supplies and Power Supply Design 04-11-2021, 03:43 PM
Replies: 11
Views: 145
Posted By petehall347
Forum: General Electronics Technical Discussion 04-11-2021, 03:42 PM
Replies: 15
Views: 879
Posted By petehall347
Re: backlight tester malfunction

switch it off and back on ..it fixed mine once .
Forum: Troubleshooting Audio Equipment 04-11-2021, 03:29 PM
Replies: 9
Views: 163
Posted By petehall347
Re: Kenwood KX-56CW Duel Cassette Deck Repair

might be a problem with the speed switch
then again other deck works ok .
Forum: Troubleshooting Audio Equipment 04-11-2021, 03:25 PM
Replies: 9
Views: 163
Posted By petehall347
Re: Kenwood KX-56CW Duel Cassette Deck Repair

see if you figure why q31 base is low . meaning q31 is off it needs to be on .
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 04-10-2021, 07:06 PM
Replies: 9
Views: 258
Posted By petehall347
Re: Installing a Cap in circuit,help

one hole is plated through by the looks of it
easy fix with cut of lead if pass through is gone .. just had to that with some relays .
Forum: Troubleshooting Audio Equipment 04-10-2021, 06:16 PM
Replies: 29
Views: 423
Posted By petehall347
Re: Powered Speaker Hum When Plugged In

way i read it is its not turning off .i thought the noise might be keeping it on and asked to short inputs to see if noise went away ..if it is the transformer its likely loose laminations or its...
Forum: Troubleshooting Power Supplies and Power Supply Design 04-09-2021, 09:54 AM
Replies: 7
Views: 125
Posted By petehall347
Re: 80v charger blown caps .

ordered 1kv ..i also took the good charger apart to have a nosy at the caps . 180nf but in circuit so wont be right . only measure one way so has to be wrong .
Forum: Troubleshooting Power Supplies and Power Supply Design 04-09-2021, 04:18 AM
Replies: 7
Views: 125
Posted By petehall347
Re: 80v charger blown caps .

well spotted i missed that blue cap .tried to clean off the mark but its staying put so best replace it ..its marked 222 1kv . i expect its 2.2nf 1kv
Forum: Troubleshooting Power Supplies and Power Supply Design 04-09-2021, 03:52 AM
Replies: 7
Views: 125
Posted By petehall347
Re: 80v charger blown caps .

forgot to say i have another of these chargers i can take apart to measure values on those caps but would be easier if someone can give me a ball park value to order .
Forum: Troubleshooting Power Supplies and Power Supply Design 04-09-2021, 03:50 AM
Replies: 7
Views: 125
Posted By petehall347
80v charger blown caps .

ok i have an 80v charger here that came in not working . soon figured out the broken legs on the output diodes . must have been dropped to do that . i repaired that problem by soldering wires to the...
Forum: General Electronics Technical Discussion 04-07-2021, 02:43 PM
Replies: 15
Views: 178
Posted By petehall347
Re: choosing new battery bms

this is the bms i am looking at ..what do you folks think ?...
Forum: General Electronics Technical Discussion 04-07-2021, 12:36 PM
Replies: 15
Views: 178
Posted By petehall347
Re: choosing new battery bms

ok its a 250w motor .. ebay ad says 30a is good for less than 1000 w . no idea if that figure is inflated somehow like they do .

oh the battery is 400wh .
Forum: Troubleshooting Power Supplies and Power Supply Design 04-07-2021, 12:12 PM
Replies: 11
Views: 145
Posted By petehall347
Re: Dell J728N 2700w UPS-Battery disconnected

check the fuses and see if there is a reset procedure
Forum: Troubleshooting Power Supplies and Power Supply Design 04-07-2021, 11:40 AM
Replies: 11
Views: 145
Posted By petehall347
Re: Dell J728N 2700w UPS-Battery disconnected

it has 8x12v batteries . best check voltage on each one
Forum: Troubleshooting Power Supplies and Power Supply Design 04-07-2021, 11:38 AM
Replies: 11
Views: 145
Posted By petehall347
Re: Dell J728N 2700w UPS-Battery disconnected

wait and see how high it goes .
Forum: General Electronics Technical Discussion 04-07-2021, 11:36 AM
Replies: 15
Views: 178
Posted By petehall347
Re: choosing new battery bms

its 36v ..
bike is a haibike ..yamaha motor ..from what i can find the most it will be is 500w . most are 250w . will know for sure when i hear back from the owner .
Forum: General Electronics Technical Discussion 04-07-2021, 11:22 AM
Replies: 15
Views: 178
Posted By petehall347
Re: choosing new battery bms

the pack seems fine all balanced for voltage .
Showing results 1 to 25 of 500

 
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