Question about RCA VR646HF VHS VCR

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Dead No Display.

Dear Techs, I have the above mentioned VCR, and I know where the Problem lies. I am an experienced tech. of 32 Yrs.I found 3 bad Caps, two Rectifier Diodes, No Problem with these parts, but I found 2 Shorted Zenner diodes, and I cannot make out the Volt& Wattage on these. And of course all this on the Power supply Board. Do you folks ever send out service literature on Elect.Equipment,? Thanks for your answer. Larry Helton (labethelton@netscape.com)

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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nousu
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SOURCE: Three Problems, Please.

Dear brother Iam also a Technician like u I have also the same dvd player with me with missing IC104 in signal board under the lense mechanism,How ever the problem which u explaind in ur question I think it is problem from the lense,becouse I got so many DVD players (not mentioned player)for the explained symptoms and most of that when I change lense become good.
Dear brother I have a request to that to mail me the IC 104 number in follwing address.noushadkaruvally at yahoo.com

Posted on Feb 05, 2008

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SOURCE: RCA L26W11 26 in. HDTV

try pts or vance baldwin

Posted on Feb 12, 2008

  • 1 Answer

SOURCE: VCR portion not working found Damaged Components

Ya rca needs to recall all rca drc8335[tape decks]
I unpluged power to deck [jumper p/s to deck]
use a other vhs deck pluged in avi port

Posted on Aug 17, 2008

  • 108 Answers

SOURCE: Tv shut down and I found the HOT to be shorted.

this set is famous for defective flybacks. part number is 262342. replace the flyback

Posted on Jan 09, 2009

  • 15 Answers

SOURCE: VCR POWER ON PROBLEM

On vcr power supplies usually first component to go is a capacitor, check if its blown, or test it if you have a meter capable, next check diodes and resistors, also check the resistors and diodes on all the boards( they may have blown if a cap has blown) If there was smoke or a smell its usually a resistor to look for. When you replace them replace them with a higher votage cap.. Example 15v 1000uF cap with a 25v -35v 1000uF cap( this is just to avoid the problem from happening again.

Posted on Feb 01, 2009

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My Acer LED monitor is black unresponsive and has an unchanging purple power button. What is causing this and how can I fix it?


We can not answer, what you can to, lacking skills or tools.
how, (get it fixed in shop?)
NO PC stated., just the same card I have GTX , that I am using right now.... as I type. MY PC is HOME MADE, ASUS based high end.
so step one is to what.?
1: try the GN246 on a known good working PC.
if that fails what do you know, in 5min work, ?
if that fails. the monitor or cable is bad.
cable is 20 times cheaper so.... bingo?

2: or take a known good monitor and test it on your unstated PC.
ok you did this, I'm talking to you and all others like you in same pickle jar. (stumped)

2 simple tests anyone can do with other PCs at home or friends that have PCs at home. (desktops)

YOU tried a 2nd good monitor on this unstated PC and it too is dead. GOT you on that. PC dead, end story on what end is dead
say it " my PC is dead." my desk top is dead. more clear.



I found my PC is dead, here is the list. NO PC stated ever.



1: I turn it on, and THE 3 FANS BLOW, SOUND heard ,seen and felt.
I always look first, gee this one is dead,.... dang.
dead fans are #1 if dead the PC overheats fast,
some super fast. in seconds fast. some take minutes,
varies by what you own, unstated.

  • PSU fan blows
  • CPU fan blows
  • GTX1050 has fan and MUST BLOW.
this is first. does yours....? all blow?
and all 3 not packed in lint , dirty. and running hot.?

how to the GTX1050 get there? you added it like mine,?
Did you plug it in, not using PC power discharging CAPS
rules first if yes, you blew up the card, called HOT PLUGGING.
  • pull power cord from wall, only this kills power dead !!!
  • push power button, see fans turn 1 second sure, this discharges the power bus and cap.'s.(rails)
  • wait 15 minutes, then pull cables and cards, or insert them,
  • do not hot plug parts inside any PC . OK?
for sure not any GTX made, do that. !!!!

I have powerful PSU to handle fast powerful graphic cards
500 watts up. do you , if not fail you will.
NO PC stated, no PSU power rating stated,
no answer really possible beyond black screens of *****.
(or purple)
no text, the LCD would infact tell you NO Sync, no signal or going to sleep, I bet you missed that, in fact that screen tells you that
even with the Video cable unplugged, turn on monitor.
a fact,

that purple tint smacks of GTX is overloaded
on line posts on PC are 99% lies, its just folks guessing endlessly and no trouble shooting skills nor training.
if wise google only (troubleshooting PC dead black screen)

Purple is outlier, but can happen but is very rare.

I bet your PC is overheating fast or is overloaded. or bad PSU
its power issue.
A PC can fail 3 ways on power.
PSU bad.
or something shorted, in side PC that overloads that PSU
or wrong PSU used, not enough watts for your GPU.

but at turn on all GPUs use small power. so

so all I can say is do the 3 fan checks
and try a 2nd PSU. or strip the system down to min
and test the PC with minimum configuration
we call this act, , Isolation tests. (a skill set all techs know)

EG: ( the big strip down)
1: remove all HDD , DVD drives, power cables, first. and SSD if present. (yes PC Run BIOS screens with no HDD there)

2: remove all memory but 1 stick ,try all , 1 at a time.
3: make real sure GTX is in the X16 top slot !!!!
3a: all techs have a spare PCI-e low powered cheap spare GPU card in there kit (tool box) we then try this, for ending black screens.
( any old $10 card works here,no kidding, express card.)

4 : bench test the PSU?

http://www.pcdied.com/power.html#rapid_testing


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Kohler 40 kw adc controls troubleshooting


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this temp bypassing is for only the most experienced techs that know normal state of sensors and can simultate them with off machine items

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Display shows "brake failure stop safely"


This is a known tech issue with MANY models of Volvo. The problem lies in the electrical connections in and between modules and sensors. Even seasoned Volvo techs have a hard time with this problem. I would definitely take it to a dealership and get a troubleshoot & diagnosis done. As far as I know, there are tech bulletins on the issue, but no recalls. A dealership would have the most recent and effective repair solutions to perform after doing a diagnosis.

Thread Brake Failure Stop Safely

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Forgott my password on avic-x930bt


hate to be bearer of bad news but you have to send it to pioneer. their techs have kept a very tight lid on the password reset for over 20+ yrs.


i have 10+ yrs automotive exp.

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Hello, my westinghouse tv has sound but no picture. when the tv is turned on, the pic comes on for a second then goes away. tv is 3 yrs old


You have 1 or more bad lamps in your display panel. You can get replacement lamps, but there is a lot going on to change them. If you are not experienced in electronics, I would suggest you let a service provider fix it, or invest in a new set.

Apr 04, 2011 | Westinghouse LTV-32w1 32 in. HD-Ready LCD...

1 Answer

We have a RCA VCR Model VR622HF Manf. 9-18-98 that suddenly won't turn on manually OR with remote. I am an experienced Electronic Tech with 43 years @ ATT. I measured the resistance at the AC Plug and read...


Hi,
If front display lit up when vcr plugged in that means power supply is working and issue is in system control section, and if front display remains dark while vcr plugged in wall socket then power supply is defective.
As you know its an old model vcr so I do not think spare parts would be available any more, I found good option for you to fix this vcr.
Click eBay.com link to get same vcr in working order for $40 that can be used to obtain either power supply or any other board/ parts to repair your vcr.
Hope these info will help you.
Thanks.

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Sharp TV LCD experiencing black screen with lines update


hmmm does seem like the backlight inverter is bad there but if ya hold up a light to the screen and your seeing colors and movement then it was the backlight thats gone bad but if ya see nothing after shining a light at an angle at the screen then the picture board has gone bad with it

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I bought a ps3 from china, got the converter and everything but the ps3 turns green and den quickly back to red


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1 Answer

Three Problems, Please.


Dear brother Iam also a Technician like u I have also the same dvd player with me with missing IC104 in signal board under the lense mechanism,How ever the problem which u explaind in ur question I think it is problem from the lense,becouse I got so many DVD players (not mentioned player)for the explained symptoms and most of that when I change lense become good.
Dear brother I have a request to that to mail me the IC 104 number in follwing address.noushadkaruvally at yahoo.com

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