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Search: Posts Made By: R_J
Forum: Troubleshooting Computer Displays Yesterday, 09:46 PM
Replies: 16
Views: 164
Posted By R_J
Re: Convert monitor ccfl to led

What would you like explained? The diffuser,polarizer and prism sheets behind the panel MUST be in the correct order and the correct direction, they are NOT just sheets of plastic.
There are usually...
Forum: Troubleshooting Computer Displays Yesterday, 09:13 PM
Replies: 16
Views: 164
Posted By R_J
Re: Convert monitor ccfl to led

Full +21 volts is applied to the + of the led's. The negative side of the led is controlled to vary the current/brightness, in this case 15 volts above ground (difference is 6 volts to the led's)
I...
Forum: Troubleshooting Computer Displays Yesterday, 08:15 PM
Replies: 7
Views: 1,760
Posted By R_J
Re: hanns-g hw173a schematic or components value

Go Advanced, click on the paper clip next to :) browse to your pictures and click upload
There is not much different between them, check page 3 for case type
Forum: Troubleshooting TVs and Video Sources Yesterday, 08:07 PM
Replies: 10
Views: 133
Posted By R_J
Re: Philips 39PFL2608/F7 No Power

Good to here you got it working.
Forum: Troubleshooting TVs and Video Sources Yesterday, 01:07 PM
Replies: 2
Views: 24
Posted By R_J
Re: LG 22LE3300 completely dead

This tv uses a seperate 24volt power supply (brick), (page 24) Looks like power comes in as VGH (+25v), check R627 (0Ω) Check VDD_LCM (+16v)
Forum: Troubleshooting Audio Equipment Yesterday, 11:44 AM
Replies: 6
Views: 42
Posted By R_J
Re: Pioneer VSX-920 receiver shutting off after 1 minute

The manual for the vsx-920-k should be used with the VSX-820-k manual I would check the dc offset at ALL speaker outputs, maybe one is off and causing the shut down?
It could be anything with these...
Forum: Troubleshooting Audio Equipment Yesterday, 10:34 AM
Replies: 6
Views: 42
Posted By R_J
Re: Pioneer VSX-920 receiver shutting off after 1 minute

During Standby mode, simultaneously press and hold the [PRESET –] and [STANDBY/ON] keys for 2 seconds to
enter this mode.
The display will return to the normal indication when no key operation is...
Forum: Troubleshooting Audio Equipment 11-12-2018, 09:09 PM
Replies: 8
Views: 102
Posted By R_J
Re: Infinity PS-10 Subwoofer Disassembly

It looks like there are two screws to remove and the cover should come off
Forum: Troubleshooting TVs and Video Sources 11-12-2018, 08:26 PM
Replies: 7
Views: 4,224
Posted By R_J
Re: Sharp LCD TV Blows Fuses LC-19SB24U

If the fet is shorted all around, then it is very likely components in the gate drive are also bad and need to be checked.
Check D7522 (15volt zener) Q7524 (2sc2712)
Forum: Troubleshooting TVs and Video Sources 11-12-2018, 08:15 PM
Replies: 6
Views: 56
Posted By R_J
Re: Toshiba 32AV500U: TCON failure?

Check the resistance on the t-con side and see if there is a short, if there is none, try replacing the fuse, you can just wire in a 1.5 amp fuse and see if it works, Sometimes the fuse just gives...
Forum: Troubleshooting Audio Equipment 11-12-2018, 08:01 PM
Replies: 8
Views: 102
Posted By R_J
Re: Infinity PS-10 Subwoofer Disassembly

Post YOUR PICTURES so we can see what you are talking about
Forum: Troubleshooting Audio Equipment 11-12-2018, 07:48 PM
Replies: 73
Views: 4,459
Posted By R_J
Re: Harman Kardon AVR 3700 blown standby power supply

This should be the service manual

https://elektrotanya.com/harman_kardon_avr270_370.pdf/download.html
Forum: Troubleshooting Audio Equipment 11-12-2018, 07:21 PM
Replies: 43
Views: 1,099
Posted By R_J
Re: Polk Audio PSW 110 subwoofer

This is a double sided board and you likely pulled the feedthru's out when you removed the capacitors, have a close look at the leads on the original capacitors, if their is a piece of the circuit...
Forum: Troubleshooting TVs and Video Sources 11-12-2018, 06:56 PM
Replies: 6
Views: 56
Posted By R_J
Re: Toshiba 32AV500U: TCON failure?

Looks like the t-con should be supplied 12 volts, there is a fuse marked F1 (24V/1.6A) next to the lvds cable.
Forum: Troubleshooting TVs and Video Sources 11-12-2018, 06:07 PM
Replies: 23
Views: 224
Posted By R_J
Re: Sharp LC46D64U Power and OPC Flash

I think the manual is a bit misleading, page 62 says error is with DET_10V (pin57) of microprocessor, BUT pin 57 monitors DET_15V (page 104) Trace that back to page 120 and it monitors the UR15V from...
Forum: Troubleshooting TVs and Video Sources 11-11-2018, 09:16 PM
Replies: 23
Views: 224
Posted By R_J
Re: Sharp LC46D64U Power and OPC Flash

Here it is, Error codes on page 62
Forum: Troubleshooting TVs and Video Sources 11-11-2018, 08:23 PM
Replies: 23
Views: 224
Posted By R_J
Re: Sharp LC46D64U Power and OPC Flash

I have the manual with the error codes but its larger than the sites 19.07 MB limit
Forum: Troubleshooting TVs and Video Sources 11-11-2018, 01:55 PM
Replies: 4
Views: 74
Posted By R_J
Re: Samsung un58j5190 power supply failed

Check Shopjimmy and see their note: https://www.shopjimmy.com/samsung-un58j5190afxza-version-is01-complete-tv-repair-kit.htm
"This model has an above-average rate of LED strip failure"
Forum: Troubleshooting TVs and Video Sources 11-10-2018, 09:11 PM
Replies: 10
Views: 133
Posted By R_J
Re: Philips 39PFL2608/F7 No Power

Did you check R611, if Q601 was shorted the resistor could be open as well. How was the fet shorted? if all the legs were shorted IE drain to gate, D607a is likely shorted or Q602 damaged
You might...
Forum: Troubleshooting TVs and Video Sources 11-09-2018, 06:33 PM
Replies: 10
Views: 68
Posted By R_J
Re: Mitsubishi LT-46249 no audio help

If you plug the digital audio out into the analog input of an amp I believe you should at least hear digital noise. If not I would think the problem is with IC4A02 or how its configured or a...
Forum: Troubleshooting TVs and Video Sources 11-09-2018, 06:00 PM
Replies: 10
Views: 68
Posted By R_J
Re: Mitsubishi LT-46249 no audio help

It does seem to have a digital audio output and a digital audio input (going by the manual) and looking at the block diagram it would be the easiest way to narrow down the problem.

If you press...
Forum: Troubleshooting Computer Displays 11-09-2018, 05:26 PM
Replies: 88
Views: 1,353
Posted By R_J
Re: Viglen CRT monitor intermittent jumping

The first thing to test is if you have the rgb signals at the plug on the main board,(the one that comes from the rear jack) They should be there. Then I would check on the plug that goes from the...
Forum: Troubleshooting TVs and Video Sources 11-09-2018, 05:20 PM
Replies: 10
Views: 68
Posted By R_J
Re: Mitsubishi LT-46249 no audio help

Can you connect the optical output to an amp? that would eliminate most of the auidio output section of the tv.
Forum: Troubleshooting Computer Displays 11-08-2018, 08:42 PM
Replies: 88
Views: 1,353
Posted By R_J
Re: Viglen CRT monitor intermittent jumping

The cap voltage won't make a difference being a bit higher. The switches get oxidized with lack of use, usually as the switches are used they self clean and you don't see much of a problem.
Forum: Troubleshooting Computer Displays 11-08-2018, 05:16 PM
Replies: 88
Views: 1,353
Posted By R_J
Re: Viglen CRT monitor intermittent jumping

That second pictue looks like it could be video, The scan on the scope (left to right) would show the video from top to bottom of the screen, (and seems to show 2 and 1/2 vertical fields) The...
Showing results 1 to 25 of 500

 
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