Electronics Repair

Samsung ln40b530p7 no imagen audio ok

At the time of turn on the set picture and audio normal, anterior 10 sec no picture and backligths are Off, chkd voltaj...

0 comments posted 10yrs

posted by mloo1955

0 comments posted 10yrs posted by mloo1955

Curious problem

Hi all, I'm now working on a different Philips scope which 'died' suddenly for no apparent reason. Here's a summary of...

13 comments posted 10yrs

posted by curd

13 comments posted 10yrs posted by curd

Philips PM5508 manual

Hi all, I've got this really old TV test signal generator to repair. I've found a very poor copy of the service manual...

0 comments posted 10yrs

posted by frank

0 comments posted 10yrs posted by frank

Gateway GM5260 has startup and freezing issues.

I'm servicing a Gateway GM5260. It uses an Intel DP965LV motherboard and it has Windows XP installed. It also has this...

16 comments posted 10yrs

posted by farberbear.unspam

16 comments posted 10yrs posted by farberbear.unspam

Orange RK100H , 100W valve amp, 2011

No PbF statements anywhere but I assume it is. Reported as consistent intrusive mains hum with any settings of controls...

10 comments posted 10yrs

posted by diverse

10 comments posted 10yrs posted by diverse

old PTC substitution

Hi all, I'm repairing an old Commodore 1702 CRT monitor. The PTC driving the degauss coil desoldered itself from the PC...

2 comments posted 10yrs

posted by frank

2 comments posted 10yrs posted by frank

Broken TV LG 32LS570S

Hello I'm trying to repair a dead LG 32LS570S LCD screen. The backlight work OK, all the power supply voltages are nomi...

7 comments posted 10yrs

posted by me

7 comments posted 10yrs posted by me

Weird 1980s tv problem. Would like explanation.

There was an AOC tv in the mid 80s that had capacitance touch switches on the front and the channel indicators were ill...

12 comments posted 10yrs

posted by chuck

12 comments posted 10yrs posted by chuck

OT: UK hackers delight

Poundland, so 1GBP per lamp, now have 3 LED 2.6W 4000k mains lamps, that come apart with 2x3 screws, easily removed 3 LE...

4 comments posted 10yrs

posted by diverse

4 comments posted 10yrs posted by diverse

flashing strobe like street light, failure mode?

There is a street light I pass frequently that occasionally flashes like a strobe. I've seen a bright flash at that cor...

9 comments posted 10yrs

posted by timothy42b

9 comments posted 10yrs posted by timothy42b

Workzone "dremmel" low revs and faultering

I replaced the triac with similar rating and same symptom. Runs perfectly smoothly, bypassing the control pcb, feeding...

8 comments posted 10yrs

posted by diverse

8 comments posted 10yrs posted by diverse

Ar+ laser Tube

This is Thekrayat and a grad student at the University of Arkansas I am working with an old Argon ion laser, so Coheren...

1 comments posted 10yrs

posted by thekra8

1 comments posted 10yrs posted by thekra8

Anyone used one of these?

Given the shortcomings of low power battery testers/meters for checking certain components that typically run at consid...

16 comments posted 10yrs

posted by curd

16 comments posted 10yrs posted by curd

EVOX 142 Phone

My daughter's apartment building uses an EVOX 142 series 2-wire intercom system. She would like to have in her apartmen...

0 comments posted 10yrs

posted by mm

0 comments posted 10yrs posted by mm

Headphone socket on laptop?

Acer laptop with combo headphone/mic socket. The tip of a 3.5m stereo jack has detached inside the socket and it's cutt...

8 comments posted 10yrs

posted by me

8 comments posted 10yrs posted by me