Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
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1970s Lounge Recreation
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Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
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The one that got away
Technical information
The Line Output Stage
The map
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Sanyo SMD
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1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
1971 Bush CTV1120
Granada Television Brochure, 1970s
Long Gone UK TV Shops
Memories of a Derwent Field Service Engineer
PYE Australia Circa 1971
Radios-TV VRAT
Fabulous Fablon
Thorn TX10 Chassis
Crusty-TV Museum, Analogue TV Network
Philips N1500 Warning!
Rumbelows
Thorn EMI Advertising
Thorn’s Guide to Servicing a VCR
Ferguson 3V24 De-Robed
Want to tell us a story?
Video Circuits V15 – Tripler Tester
Thorn Chassis Guide
Remove Teletext Lines & VCR Problems
Ceefax (Teletext)
Suggestions
Website Refresh
Colour TV Brochures
1970s Lounge Recreation
CrustyTV Vintage Television Museum
Linda Lovelace Experience
Humbars on a Sony KV2702
1972 Ultra 6713
D|E|R Service “The Best”
The one that got away
Technical information
The Line Output Stage
The map
Tales of a newly qualified young engineer.
Tales of a Radio Rentals Van Boy
Sanyo SMD
Disastrous Company Rebranding
1969 Philips G22K511
Memories Of The TV Trade
Crazy house
Dirty TV screens
Dual Standard and Single Standard CTV’s
Radios-TV on YouTube
The Winter of 62/63
A domestic audio installation
1979 Ferguson Videostar Deluxe 3V16
Music centre modifications
Unusual record player modification
B&K 467 Adapters
Mishaps In The Trade
1971 Beovision 3200
1971 Bush CTV1120
Odd value capacitors?
I'm trying to recap a Philips 219B set and have come across some oddities that need replacing...
0.0027uf
0.000725uf
0.001615uf
0.016uf
0.025uf
any ideas on a good replacement, these are mostly listed as bandpass coupling or oscillator tracking items
thanks
Hi Dave, if you have a good spares box you may well be able to make then up from smaller values in parallel. In this application (tuned circuit) polystyrene or mica caps would be the type to use.
The .016 and .025 are a bit large and sound more like harmonic tuning caps for the LOPT. These definitely need to be HV caps and used to be supplied by the service companies as specific parts.
Ed
Thanks,
this is a radio, battery operated valve.
I will look into the parallel idea.
What is the deciding factor between choice of cap - polypropylene, polystyrene, ceramic, mica etc????
I'm trying to recap a Philips 219B set and have come across some oddities that need replacing...
0.0027uf
0.000725uf
0.001615uf
0.016uf
0.025ufany ideas on a good replacement, these are mostly listed as bandpass coupling or oscillator tracking items
thanks
Out of those, the only critical ones are probably .000725uF (725pF) and .001615uF (1,615pF) which are likely associated with oscillator/RF tuning. Probably better to make those up from series or parallel combinations. The others (.0027uF, .016uF and .025uF) could be replaced by 0.0022 or 0.0033uF, 0.015uF and 0.022uF respectively.
What is the deciding factor between choice of cap - polypropylene, polystyrene, ceramic, mica etc????
Polyprop, polystyrene types are best for audio coupling and ht decoupling. Ceramic for IF/RF decoupling and Mica for tuning/padding etc. Ceramic caps tend to have a fairly wide tolerance spread so not so good for tuning/padding etc. Mica are stable and (usually) close tolerance so good for RF
I'm trying to recap a Philips 219B set and have come across some oddities that need replacing...
Do you *know* they need replacing?
I'm trying to recap a Philips 219B set and have come across some oddities that need replacing...
Do you *know* they need replacing?
One of the waxed mica one has snapped off where the lead joins the body, two of the others seem to have cracked or split.
The 1615p/odd value caps rings a bell, I think I may have some, somewhere. I remember asking about these over on UKVRR a while back. Will check.
Send me a PM in a few days if I forget, Andy.
Curiously curious
One of the waxed mica one has snapped off where the lead joins the body ...
That shouldn't be a problem as the eyelets which hold the assembly together (and will still be clearly visible on a waxed capacitor) are also the connections.
Heat the eyelet and wipe off the molten wax. Repeat as necessary to ensure that all trace of the wax is removed from the eyelet/
Now solder on a new lead out wire.
Gently heat the entire capacitor until all the wax has melted and let it flow evenly over the surface (or you could add a few drops of candle wax).
You can now replace the capacitor in the set it came from.
When all else fails, read the instructions
Had a look for the caps, but can't find them. Will keep looking,
Andy.
Curiously curious
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