Electronics Repair

Circuit Diagram for TV CVB42001 Power Supply Board

Has anyone got, or know where I can purchase, a schematic diagram, for this TV, Power Supply Board, CVB42001. This boar...

11 comments posted 10yrs

posted by ynot4me

11 comments posted 10yrs posted by ynot4me

HP DV9000 no video, part 2.

A while ago I started this thread about an HP DV9000 laptop that had no video. https://tinyurl.com/ndtmko6 The follow u...

3 comments posted 10yrs

posted by farberbear.unspam

3 comments posted 10yrs posted by farberbear.unspam

Tektronix TDS544A and TDS644A schematics now available

http://hakanh.com/dl/kits.htm

0 comments posted 10yrs

posted by none

0 comments posted 10yrs posted by none

Re: Laptop Battery Charging

> My laptop doesn't always charge the battery. I have seen it read "32 % > not charging" and similar. I have read a bit...

1 comments posted 10yrs

posted by gboot.phil

1 comments posted 10yrs posted by gboot.phil

Odd problem, Low K Ohm Resistance Scales Out Of Tolerance.

Hello, I have an old Data Precision (USA) 1350 "3 1/2" Digit LED type Multimeter f rom the 70's era. It works great, ex...

6 comments posted 10yrs

posted by neilwrites2

6 comments posted 10yrs posted by neilwrites2

Fender Bassman Ten, 1975

Only 1 changed resistor inside in 40 years, pretty good for twice weekly use over most of that time. Heaters glow but H...

1 comments posted 10yrs

posted by diverse

1 comments posted 10yrs posted by diverse

HDMI Inputs On TV ?

Hi, Figure that someone here would know. My TV has only 2 HDMI inputs. I have a USB hub on my PC that allows 6 USB inpu...

3 comments posted 10yrs

posted by rgsros

3 comments posted 10yrs posted by rgsros

Fender Frontman 212R Volume 80% down problem

Hello, I was wondering if you could help repair a guitar amplifier, it is a Fender Frontman 212R, schematics are here:...

40 comments posted 10yrs

posted by capossio.leonardo

40 comments posted 10yrs posted by capossio.leonardo

Mackie SR24.4

Does anyone have any experience with the Mackie SR24.4 A customer asked if I could repair one which he said had a power...

2 comments posted 10yrs

posted by invalid

2 comments posted 10yrs posted by invalid

Sony CD/Radio wont's stay turned on...

Hi - I have an old-but-very-good-condition SOny CFD-44 rado/CD/Casstte play er - been reliable for many years... Extrem...

9 comments posted 10yrs

posted by nick

9 comments posted 10yrs posted by nick

"Groovebox" with damaged TFT touchscreen

Someone has offered to sell me one of those "sampling drum machines", that usually goes for around 700 bucks new, for $...

1 comments posted 10yrs

posted by bitrex

1 comments posted 10yrs posted by bitrex

Philips DH415 Pm 20W 8ohm speakers -- is this RMS or Peak Music?

Hi, I have some really old speakers Phillips DH415 that were gathering dust. I want to re-purpose them and use them wit...

14 comments posted 10yrs

posted by vek.m1234

14 comments posted 10yrs posted by vek.m1234

Sony TC-208 Eight-Track Deck

Replaced the belt on this deck (after spending well over an hour cleaning out the tar-like goo that the old one had gon...

10 comments posted 10yrs

posted by policedept

10 comments posted 10yrs posted by policedept

On/Off Switch: Why Six Pins?

Automobile dash cam failed. I am pretty sure it's the On/Off switch, so the workaround will be to hard-wire the thing t...

8 comments posted 10yrs

posted by x

8 comments posted 10yrs posted by x

Make up a 24V Li 6x 18650 Drill battery?

This is for a 24v (Ni-Cd originally) fairly powerful hammer drill. The original 2 batteries it came with are shot and I...

2 comments posted 10yrs

posted by charlie

2 comments posted 10yrs posted by charlie