Electronics Repair

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Vivitar 283 repair?

I have some Vivitar 283 flashes I used several years back in lower power mode for a special application (I swapped out...
2 comments posted 10yrs
posted by bbaxter455123
2 comments posted 10yrs posted by bbaxter455123

Revox B251 Integrated Amp No Output and More

Before I dive in blind, here are the symptoms: This amp, which had worked nicely at our summer house (seasonal use) for...
9 comments posted 10yrs
posted by pfjw
9 comments posted 10yrs posted by pfjw

Samsung ln40b530p7 audio ok backligth intermtitent

At the time of turn con picture and audio are normal and aprox 15 secs late r backligths do not ligth con so no picture...
2 comments posted 10yrs
posted by mloo1955
2 comments posted 10yrs posted by mloo1955

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