| Subject | Text |
| Samsung 52inch RPTV video problem SP52Q7HRX/AA | The video started to go out, first by giving lines on all high def content, and then on the tuner an |
| samsung hp s5033 plasmahorizontal lines | same problem my logic board has 2 lights one flashes the other on all the time, [email protected] |
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| Dell 1801fp flat panel monitor power supply problem | My dell monitor just died recently, no power.
I am a beginner at electronic repair hope if someone |
| hi help needed | The VCC1V8 supply is switched ON by a Enable1V8 Logic High signal whose Voh(min) = 2.8V, Vol(max)= 0 |
| an interesting discovery re: zener diodes in power supply | In the Troubleshooting section of the manual, shorted zener diodes across the driver transistors (in |
| Mastech ms8201h | Does anyone have available the service manual for the Mastech ms8201h multimeter?
Thanks |
| Jackson Power Supply #607...No Low Voltages.??? | I just got a Jackson Model 607 Power Supply that my Father had in storage.
I plugged it in and foun |
| Re: Function of inverter on lcd display | Hi,
The purpose of an inverter is to convert the DC power supply to AC to power the LCD back ligh |
| Power supplies need a signal to turn "on." When you put your set into test mode, the power |
| A Logic Not Circuit or Inverter would do the trick.
It has the opposite output than what is at the |
| ok... thanks for all your help! much appreciated..
this amp is part of a separates system - but i |
| Re: Same TV, Same Problem.... | Hi..just to shere my knowledge..i from malaysia but i think the basic still same..i have lot experie |
| Increased Volume & Broken TV - Help! | Hi
I have a Toshiba Dolby Pro Logic, Surround TV Model No. 32W8DB.
I turned up the volume to m |
| Well for the resistor chain that includes R5, starting at top, 90K then comes 9K, then comes R5, the |
| Hello The_AntiRAM , thanks for your help .........
[quote:5091cfa7b0]Without Service Manual or An |
| the psu needs to be tested while connected to the vcr as the supply rails will often only be low whi |
| [quote:6b205a12c6="Anonymous"]Have you checked the horizontal output transistor for shorts?[/quote:6 |
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| 37MF321D/37 | I just sold the main board to this tv.Ill sell both inverter boards and the logic board for $60.Ive |
| Answer for my previously question about logic board compatibility !!!
The LJ41# is the designatio |
| The excessive heat, probably from the output stages is likely due to excess current through the driv |
| PHILIPS TV CHASSIS A02E Suddenly Restarts | I have a Philips TV 29PT8509 . It suddenly restarts . It looks like a malfunctioning protection . I |
| Horiz output | Ahh I get it now,
I would like to scope the base signal while lamp load is on and measure frequency |
| Magnavox 50MF231D/37 Dead | Replaced bad caps in power supply, C8060 & C8059 both 3300uf. Still in shut down. No voltage a p |
| Tektronix TM 515 w/ PS 501-2, SC 501, FG 501, DM 501, DC 504 | I have a Tektronix TM 515 mainframe with the following plug-ins. Due to its portability this unit i |
| temperature switch | try using a digital multimeter on dc volts, supply 12 volt supply with series resistor to vary outpu |
| [quote:e49eaef5fd="vtech"]Should not be difficult to determine as to why your sub/w is not working. |
| Please post service manual for Genicom 3860 | Have to replace the logic board and unable to locate the manual |
| Sell Instruments | Miko-Kings Instruments Ltd http://www.miko.com.hk
Miko-Kings Instruments Ltd., hereinafter called |
| Update | Checked voltages coming out of power supply all were good except the ones coming out of the cnn64 co |
| Re: Tektronix 422 | [quote:da0218760b="ninelives"]I have a Tektronix TM 515 mainframe with the following plug-ins. Due |