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A family car with about 150.000 miles on it. Over the years we have maintained it , has a nice hobby shop. The most irritating problems: Ignition module died. Engine also has poor quality distributor caps, they die every fourth year. 2021 we replaced all suspension bushings, shocks and...

Repairing a top of the Blaupunkt line 1968, a Koeln series X self seeking car radio, LW, MW,SW and FM. Radio works perfectly, replaced all electrolytics in speaker driver part Some specialist has sprayed the entire radio with loads of some kind of "cleaning spray " that has also enered the...

I overhauled the 6 cyl 2,8 l straight six on a friends MB 280 SL 1969. Around 220.000 km ( ie app 140kmiles) Also converted to Megasquirt and EDIS. Engine as new after boring , grinding crank and flywheel, new cyl head. All new fasteners. When tuning it suddenly stopped cranking. Starter spun...

The 2 post lift came with a single phase motor with centrifugal switch. Which in a threephase country is an abomination. After some years the switch checked out. Opened motor, removed switch and pulled out the wire for the start winding Installed a 0,5 sec drop out relay feeding the start...

My friend has a MB 420 1994. Great car. Has a fault code system you can read with a LED and count the number of flashes ( up to 32) Would like to build a simple counter with 2 off 4 bit binary counters ( ie max count well over 32 ) that feed BCD to 7 segment ICs and then two 7 segment LED...

Hello to all. I am repairing an old and quite unusual radio ( submarine unit from 1937))and want to keep it as close to original as possible. A wavelength switch ( the old rotary type , ceramic body, brass switch sectors and clips ) was very corroded. Removed, disassembled and cleaned. Want...

Posted this under Classifieds. No response Quote I have a 750 page book " Electric Motor Repair" around 1965. Rosenberg Covers all aspects of all motortypes I have ever seen and then some. In very good condition. Weight about 1,5 kg. Clever design. You can have the text section ( two pages) and...

I have a 750 page book " Electric Motor Repair" around 1965. Rosenberg Covers all aspects of all motortypes I have ever seen and then some. In very good condition. Weight about 1,5 kg. Clever design. You can have the text section ( two pages) and the drawing section ( another two pages)open...

Much of the electrical power we use today is generated by large prime movers ( turbines , mostly) driving large three phase generators. However, an increasing amount comes from wind turbines ( each unit up to maybe 20MW) and large scale PV farms. Germany is a prime example. Around 60 % of...

I have an inkling to post a 400/240 three phase residential and small business review. Some theoretical stuff, some practicalities, and a few opinions. Please let me know if it will add to the many excellent posts in GJ. Or better binned? Ola

I am the happy owner of a Hitachi 2 channel 20 MHz scope from around 1988. It has a built in 12 V 1,8 Ah NiCd pack including charging system. Great when working on AC mains circuits, scope is floating. I bought the scope 2021 and opened it . ORIGINAL NiCd pack, marked March 1987. Full charge in...

Hello to all. A friend has restored a 1976 GMC Suburban , and found an original GM radio for his 50 yo car. I am trying to restore the radio. Found the fault in the FM part, it was a broken end of one of the tuning coils. So FM works good. But AM is dead. I am tracing the input signal and it...

The MB W140 serie 90-94 ( V8s 4-6 l) has one 4 pole distributor cap on the front of each cylinder head, directly driven by the camshaft. Electronic ignition module, spark can kill an elephant! Unfortunately it also kills the distributor cap. Typical lifetime is 3000 miles. And the cost around...

Need some help. I am trying to repair a MB W 140 ( 500SEL -93) that has a fancy Becker radio and then a 7 channel power amp. Sits in the boot. The type is BOSE, it has a MB number 140 820 00 89 and is available from MB Old Timer center in Stuttgart for about half the price of a well maintained...

20 miles south of Forsmark Nuclear power station there was a need for maintenace on one of the two 1000 MVA transformers in a 420/220 kV substation. Simple job. Replace a contact set in the OLTC diverter switch in T401. T 402 remained in service. And the first things on the scheduled work...

I have been restoring a SOUNDRADIO from 1951. Swedish made, company dead since 1960. No schematic available and unusual design. Also cheap components, all 7 tubes were shot, but easy to find. The radio is AM only. MW and LW with 5 short wave bands. +- 500 kHz bandspread SW tuning. The input IF...

on an already strained national 400 kV power system. Trust the Ringhals personnel! There are 6 remaining nuclear power plants in Sweden. Around 35% of total power input. Used to be 12, 52 %. One plant 1,2 GW, was down for annual maintenance, around 4 weeks. During prestart checks the boneheads...

In european papers the delay of the Artemis take off this week print that it was a faulty temperature sensor for the fuel, set at -420 F that showed a low value of -375 F. If fuel was at this value ( -375F) it would lead to major thrust problems. Can somebody with real knowledge of this...

Just completed a Becker Solitude 1953 for a MB 170A cabriolet. Among 200 other things, the volume control pot with a pull switch for ON was destroyed. Long shaft, 58 mm 1 MOhm log with switch, which is hard to find. Scored two NOS, both were bad. Bought a hiQ CTS pot , but shaft was only 12 mm...

A friend has an unusual Hebmuller Cabriolet from 1949 which was equipped with a Telefunken MW/SW radio around 1953. He spent 15 years restoring the Hebmuller, which is a VW that a coachbuilder company rebuilt. Quite unusual. And the restoration is perfect and true to the original. No Garage...