Re: Dell DPS 1200MB A pinout
[ATTACH]254286[/ATTACH]
Thank you for the help.
I´ve put a resistor of 220 Ohms betwin these 3 pins and the psu goes ON.Re: Dell DPS 1200MB A pinout
[ATTACH]254286[/ATTACH]
Thank you for the help.
I´ve put a resistor of 220 Ohms betwin these 3 pins and the psu goes ON....
fpsousa
Member
Last Activity: 09-08-2022, 02:49 PM
Joined: 12-05-2015
Location: Lisbon
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Re: Dell DPS 1200MB A pinout
another photo side down.
[ATTACH]254089[/ATTACH]...Leave a comment:
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Re: Dell DPS 1200MB A pinout
Thank you
I send 2 fotos position down and the voltages on the two sides....Last edited by fpsousa; 01-21-2022, 04:52 AM.Leave a comment:
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Dell DPS 1200MB A pinout
Hello
I have this power source to repair, but don´t know the pinout to get it ON.
Somebody can help?
Thank you.
[ATTACH]254012[/ATTACH]
[ATTACH]254013[/ATTACH]Hello
I have this power source to repair, but don´t know the pinout to get it ON.
Somebody can help?
Thank you.
[ATTACH]254012[/ATTACH]
[ATTACH]254013[/ATTACH]... -
Re: Sony chassis AE-5 led blinks 4 times
Sucess! i´ve already discover the problem: the xray protection was activeted and don´t allows power on. No problem with vertical circuits. After this problem had been sorted out, the tv works good.
Thank you all for the help.Leave a comment:
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Re: Sony chassis AE-5 led blinks 4 times
Regard: pins 5 and 6 go to A4 and A5 CN 4101 that goes to A board CN 1401 A4 and A5 (DE8 and DE10) to D board pins 17 and 19 and finaly, signal enters by CN6102 same pins and go to pin 1 and 7 IC 6700, they are enters, do you agreed?
Yes, i´ve already had another Sony that 4 blinks, are TSL.
I´ve tested E board out the tv set and aplly 9 V and the result is a good HDrive (about 32 Khz square wave) and some Vertical outs on pins 3,4, and good 503Khz on 15.
So, my doubt at these time is if the CXA2100 are really good or...Leave a comment:
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Re: Sony chassis AE-5 led blinks 4 times
I send a diagram AE-5; the CXA2100Q generate HDrive at near 32Khz (double of the portuguese standard -16325 Khz), but don´t generate the vertical SAW at pins5 and 6 but the other pins, generate normal vertical signals, 500Khz oscilator good, even put the Vprotect at pin 16 to a 0 volts; so, only the pins 5 and 6 (SAW+ and SAW-), don´t out nothing; could be these IC? or another protection is active?
Tanks...Leave a comment:
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Re: Sony chassis AE-5 led blinks 4 times
They are good, but these two voltages don´t up enough, because the TSL seems to be up briefly and goes off imediatly. if no horizontal, no voltage to vertical circuit.Leave a comment:
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Sony chassis AE-5 led blinks 4 times
Hi,
I have a Sony KV-29FX60E (chassis AE-5) that blinks 4 times; the manual tells that is vertical protect. I´ve already change IC vertical STV9379 but no change. Whath could be?
Tanks -
Re: Toshiba 24W1334G Led green and red intermittent
The TV don´t starts LED backlight and 5V for the panel, it seems to be at st-by.
Has 12V, 5V, 3.3 and 24V for led backlight, but the booster to near 30V, don´t turn on,too.Leave a comment:
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Toshiba 24W1334G Led green and red intermittent
Hi.
I have a Toshiba 24W1334G that with a flashing led green and red intermittent and no powers on. The main board is an 17MB95S-1 from Vestel. Can be the firmware?
Tanks for any help. -
Hi.
I have a Toshiba 24W1334G that with a flashing led green and red intermittent and no powers on. The main board is an 17MB95S-1 from Vestel. Can be the firmware?
Tanks for any help. -
HP DPS-800GB-a don´t work
Hi,
I´ve to repair this PSU from a server, that don´t work at all, no green Led,no fans and even no st-by voltage.
Only plug at 220V in series with a 100W lamp bulb, it makes a initial flash (caps charging) and reduces to a low light, permanently.
There are a board attached to the mother that has many components in her.
Any idea to start the troubleshooting?
Tank you. -
Re: PSU Liteon PA-3241-02A1 don´t work
with some pics...Leave a comment:
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Re: PSU Liteon PA-3241-02A1 don´t work
Hi, again
Well I solved this problem and want to share with you.
After replace the IC TEA1750T, it stays the same.
So I've go again to research bad components at the secondary side and discovered a smd mosfet with leakage between source and drain; this mosfet is marked S72 (=2N7002) and connects pin 7 from TEA1762T and optoelectronic PC300.
So this inhibits the primary to start, I think.
Tank you all for your advices and hope this case can help you too.Leave a comment:
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Re: Targa Visionary LT3020 starts ligth then dark after 1 or 2 seconds
Hi, folks,
Success, really was the CCFL transformer broken.
Whit a new one the LCD works ok.
The protection went into action....Leave a comment:
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Re: Targa Visionary LT3020 starts ligth then dark after 1 or 2 seconds
Well, i-ve already detect one CCFL transformer with his secondary giving diferent resistance comparing with the other ones.
So, it seems to be this component.Leave a comment:
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Targa Visionary LT3020 starts ligth then dark after 1 or 2 seconds
Hi, Merry Christmas to all!
Now I have for repair an lcd "Targa Visionary" that starts, makes a flash light during about one or two seconds then stay dark, but the sound stays ok and the video comes out from 21 pins (euroscart).
The front panel led is green at first, then goes red blinking and finally goes off.
PSU produces 12V, 24V and ACdet at 3.5V and the 5V ST-BY.
May be is the inverter.
Any help?
Tanks. -
Re: Acer aspire v3 auto on
Hi.
You can trie first to start it only with baterie and see if it works well.Leave a comment:
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Re: LG RZ-37LZ55 stuck in Standby
Hi
Yes, it seems to be the CPU chip that don´t produces the on/off signal.
Has you measure the crystal clock frequency? and the voltages on main that suplies the CPU?
Sometimes the eeprom must be exchanged and sometimes is a problem off firmware.Leave a comment:
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